Nistune. Cooling System Electronics Engine Engine Electrical Exhaust System Forced Induction Fuel System Heating & Air Conditioning Intakes & Induction Interior Misc Powertrain Scratch & Dent Services Suspension & Steering Universal Lines. Nistune

 
 Cooling System Electronics Engine Engine Electrical Exhaust System Forced Induction Fuel System Heating & Air Conditioning Intakes & Induction Interior Misc Powertrain Scratch & Dent Services Suspension & Steering Universal LinesNistune  I've gone from 370CC injectors to 750CC and not 100% sure if some other value needs to be changed due to the two separate intakes from the Selin Kit

Get your 2021 Z31 Calendar on our Zazzle page. Contained in this manual are the instructions for installing a Nistune board into 1980s Nissan vehicles. Cowboys and Indians has been getting some fresh maps, this is one of the newest produced for the Hive. Instead of purchasing an expensive external ethanol content analyzer, Nistune has also developed dedicated Flex Fuel Boards which are small. An ECU like Haltech (or similar) will send your engine into limp mode, or shut it down altogether at the earliest sign of a fault anywhere (granted your tuner set everything up correctly). Last post Re: FP2. 32. Dont worry about the directory because NIStune doesnt use it for this particular wideband unit Once you can see this on the screen in teraterm then your unit is working and then NIStune should see it. How to use the Nistune software. Feature pack upgrade. I'm making 165whp and 170ftlbs with i/h/e, very mild cams (old af), nistune and dyno tuned, sr20 injectors, n60 MAF, and a 4. Join Date: 2012-06-12. This solution provides many advantages over aftermarket ECUs in that the • Factory default tuning is maintained once the Nistune board is installed. UNPLUG O2 SENSOR FROM ECU BEFORE PROCEEDING (if you have a narrowband feeding the ecu, unplug it, if you have a wideband feeding a narrowband signal, unplug the narrowband wire) 1. com. Licence name: Enter licence name. Solder your wideband's +12v switched power wire to this wire and either cover with electrical tape or heat shrink. One outstanding area where E85 fuel works well is for a supercharged or turbocharged application. FTDI make the USB chips in our cables so simply use the FTDI install guides but instead of using. If Nistune only uses a single value, what is the resistance of your resistor pack (ie, what is the maximum current they will provide). Also provided are ECU consult plug pin outs used for diagnosis and when wiring in consult plugs for engine transplants. NISTUNE: 1988 Z31 Stock Turbo Manual Transmission 26P0F SS: Download: 94: 88 Stock Turbo Manual 26P10: NISTUNE: 1988 Stock Turbo Manual Transmission 26P10: Download: 95: L28ET z32 DSM450cc: Jason Butts: Tune by User on HybridZ. Hi everyone. 2. Tax amount: $ 10. The Haltech plug-in is a complete solution for the Nissan Z32 300zx. 00. AFR Auto Tuner. If not then reinstall Nistune and ensure the drivers have been selected for installation. dll (for the VCP driver) Then I. Tax amount $ 5. 64 but it’s up to you), FMIC, a Z32 maf, minimum 550cc injectors, Walbro 255, MLS headgasket, and head studs. Could’ve gone higher but the rear main seal leaked and soaked the clutch in oil. 1. Try your damnedest to find the perfect project car, like this 1990 Nissan Silvia K's, and you might be in for a hectic hunt and a painfully long wait. And as you may have guessed, this is no shop-built. EN. Attention! Your ePaper is waiting for publication! By publishing your document, the content will be optimally indexed by Google via AI and sorted into the right category for over 500 million ePaper readers on YUMPU. When using ODD/EVEN mode, plug in the one emulator at a time when connecting to them Use NIStune version 0. Vehicle List. Nistune tells you what your timing should be if you measure it with a timing light. • Perform playback using graphs, gauges and map tracing. The Nissan KA24DE is a 2. The game for mechanics and performance geeks means cracking the latest OEM hardware, reverse-engineering the plethora of data uncovered, and building a tuning solution that can pull all the desired strings. How Does Nistune Work? everyone is telling me to get a nistune done on my 33, i know that its a computer upgrade to your standard ecu, and it unlocks more potential. The only main differences when using this solution: - The R33/R34 models both use different O2 sensors (Titania vs Zirconia). Nistune topics specific to the H8534/H8536 cpu. 00. Turn the vehicle Ignition switch to ‘START’ briefly to run the engine. Discuss software bugs and related problems here. 42@113. Nistune will display AFRs, RPM and two user configurable auxiliary inputs for this unit. General Documentation. Well atm I have full exhaust, ecu tune, manual boost controllers set at 15 psi and cold air intake. Licence name: Enter licence name. Sun Nov 03, 2019 6:22 am. Postby OM3GA » Thu Mar 24, 2011 10:41 am. English Deutsch Français Español Português Italiano Român Nederlands Latina Dansk Svenska Norsk Magyar Bahasa Indonesia Türkçe Suomi Latvian Lithuanian česk. So this means NIStune doesnt use AFR lookup tables. Nistune Workshop Training Notes. 4 l (2,389 cc, 145. The person who sold me the nistune pulled some ignition timing off to compensate for the high comp engine in order to safely get the car to a tuner or be drivable. Simply let the car get to operating temperature and idling at a. Location: Adelaide, Australia. 00. Contains all extra maps. <br> • Eliminate cord clutter and stream your music wirelessly. Send Board only No additional charge. FTDI Driver Install Guides here. Nistune FP 2. Download PDF. If not then reinstall Nistune and ensure the drivers have been selected for installation. MicroTech free tuning software download. PMAS claims these MAFs can be used post turbo, but you should take into consideration: 1. Tax amount: $ 15. Functionality. Nistune is a software that allows you to retune and monitor your engine control unit (ECU) for Nissans. - select . Last post Re: 23710-VC264 2003 Patrol T…. If it works in the device, it is suggested to try to configure. This is. 99 Sale. Laděním jednotek Nistune se zabývám od roku 2013. Connect your smart device to your Nissan vehicle and enjoy the many benefits of Bluetooth. Part number: 13577394. On Sale. 1. Members; 960 Gender: Male; Car(s): 33gtst, nb8a, boosted swift;Continental Flex Fuel Sensor (E85) - Long 13577394. Post ECU to our workshop for same day fitting on receipt and return express post. Nistune Software (Workshop licence upgrade) Software (Workshop licence upgrade from Individual) Base price: $ 400. Tax amount $ 20. Available in naturally-aspirated and turbocharged guises, the R31 GTS-R. What Is Injector Dead Time? Injector dead time is exactly what it says. Version 2. It covers topics such as fuel maps, ignition timing, boost control, knock detection, and more. FAQ; Board index. Bolt your ECU back in and fit all the covers. Update: they ended up respawning once I spent a few game days away from the tree, the hedge to be more specific. Nistune Feature, Part 2 – Dual Wideband Installation. save that file and use it for when I install the nistune board. If you do use a manual ECU your auto system will be f**ked. Nistune uses a daughterboard for realtime tuning using a modified version of Nissan Consult. Tax amount $ 15. Old setup-ka24de-wiseco 9:1 pistons,eagle rods,arp studs,jwt s1 cams,brian crower springs and retainers,jgs log mani,t3 57trim . 3. plug and play systems works with 20 old year wiring so its a flip coin. 745 746. Mechcnical and Running issues. How to use the Nistune software. <br> •. TunerStudio MS Lite free tuning software download. 5L EcoBoost. 8:1VG30ET 88-89+: Single Garrett T25 turbocharger with a factory boost setting of 4-5PSI and an engine compression ratio of 8. So I think that leaves with me going standalone. Nistune uses a daughterboard for realtime tuning using a modified version of Nissan Consult. もちろん、R35エアフロをツインで装着する事になります。. Product details. Topped out right now at 305whp 279trq. We cannot confirm if there is a free download of this software available. The steps for performing this are below:Nistune Licence Dilemma I'll be looking to turn the key on my Zed for the first time probably tomorrow or the day after but until I make some changes to my current Tune I can't. It comes will a great software that will do a lot of work by just choosing items from menus, and it allows real time modding. 00. WARRANTY The author of this Software has verified as best as possible to make sure the main features and functions work as described while normal usage onThis document assumes that the NIStune board is already fitted, NIStune software is installed and comms between ECU and laptop have been established. I'm rather n00b to tuning, and I (obviously) don't want to blow my motor. 日産車に関しては「 NEKO 」ソフトでのメイン書換えや「 NISTUNE 」の取付け&セッティングも. WARRANTY The author of this Software has verified as best as possible that the main features and functions of the Software and Hardware workThe only values I am allowed to change on my nistune is the "Raw Values" and this is the case for the fuel AND timing maps. NIStune is a real-time tuning suite designed especially for Nissans which provides the ability to: • Retune factory Nissan Engine Control Units (ECU) • Monitor gauges and map tracing on your ECU. This document assumes that the NIStune board is already fitted, NIStune software is installed and comms between ECU and laptop have been established. Chin seems to be MIA and I was referred to Dennis out here, but he is only familiar with Haltech. W P ï ð } ( ï ô ~Z î ñ d µ ] v P Z î ì d h Nistune is a realtime tuning suite for earlier models Nissan's (from 1986 - 2002) which are able to be fitted with one of our solder in daughter boards. . nistuneとは、純正ecuに追加基板を実装し、pc上でリアルタイムで燃料増減、点火時期設定などのecu書き換えを行う基板とソフトウェアのことを言う。 nistuneの利点は純正ecuを利用した安定したアイドリングが行える。t-getと言えば現車セッティング!. I've updated Nistune software and tried uploading a map to my ECU by resyncing then burning as usual. You need to be clear on these forums which ECUs. Contained in this manual are the instructions for installing a Nistune board into 1980s Nissan vehicles. 00. Post ECU to our workshop for same day fitting on receipt and return express post. • Data log from your ECU using consult, wideband and auxiliary inputs. Four Screws for ECU mounting. Search for Nissan stuff on ebay!14 posts · Joined 2010. 99. Nistune Base Image Programmer Base price: $ 150. Ever since I've had it I've noticed it hesitates / goes nowhere until around 3000 RPM at which point it blasts off with full power. Murray_Calavera. But there should be no link between Nistune and diagnostic codes raised as a result. Nistune Parts Shop (日本語) Nistune Parts Shop. NIStune PLMS Consult Cable. It provides faster transfer rates, realtime modification of maps, constants and tables using the Nistune software. Product not eligible for promotional or. ago. Version 2. The Nistune hardware and software solution provides a means for the car enthusiast to retune their vehicle whilst retaining their factory ECU and its default programming. Nistune has tested HPX sensors before the turbo on two different vehicles pre-turbo with 3”, 3. Comprehensive instructions. The Stock ECU uses an airflow meter for load so the maps arent really going to be relevant to an aftermarket ecu that is using Alpha-N for fuel and MAP for ignition. 3. Nistune is a system that allows you to tune your own SR20 powered vehicle with a laptop and a real-time board. software the vendor ID may have changed and NIStune will ask you to reset it Hints: Mark your emulators as ODD and EVEN. I was recommended to a HALTECH, but it looks like those are for manual transmissions only. Set your blueprint cabinets up so that the blueprint inside is completely visible. Nismo extended studs, check out all the suspension components. 8% off. Set the AFRs that you require in this window. Install the components as. MSPNP RS232 serial tuning cable, 6′ (USB adapter sold separately, if needed) Tuning Software and Documentation USB Stick. When using ODD/EVEN mode, plug in the one emulator at a time when connecting to them Use NIStune version 0. Boost Pressure Sensor Gauges If the boost sensor voltage exceeds the specified max voltage 4. The VQ35DE is one of Nissan’s greatest modern achievements, which ultimately led to the VQ37. The car with the Nistune will show a code 21 which is because the ignitor is missing. Just remember it usally takes about 12 hours. Work out what the problem is or you’ll cause yourself extra trouble. Playback will update gauges and map tracing as if the data was live • Logging is useful during a run to monitor a trace of gauges during the run and for problem solvingNistune Installation and Communications Diagnostics Guide Page 8 of 28 3. For my build I installed a Megasquirt 3 standalone in parallel with my factory TB45 ECU. The stock ECU is also known to have a huge dead spot from 44. Measure and cut of the last 1/2" of the boot. 00. I've really been considering switching over to nistune very soon. Base price: $ 100. It also explains how to use Nistune features such as boost control, safety rev limiter, and air fuel ratio maps. This is not an issue Nistune tuning software Nissans Skyline 200SX 300ZX 240SX Silvia 1lvvdq 0$) 3lqrxwv 7kh iroorzlqj slqrxwv duh xvhg iru dvvlvwlqj zlwk xsjudglqj \rxu 0$) vhqvru 6rph qrwhv 6hh rxu 0$) 7hfkqlfdo qrwhv grfxphqw iru 0$) sodfhphqw dqg lqvwdoodwlrq ehiruh ilwwlqj \rxu 0$) Manufacturers: Nistune / PLMS Developments Product # {{ productPartNumber }} In stock $ 119 00 $ 109 95. - NIStune EN English Deutsch Français Español Português Italiano Român Nederlands Latina Dansk Svenska Norsk Magyar Bahasa Indonesia Türkçe Suomi Latvian Lithuanian český русский български العربية UnknownI’m running a highflowed r34 turbo from hypergear and she starts to pull good at 3500 rpm. Experience has shown that anNistune is a real-time tuning suite designed especially for Nissan vehicles. Posts: 8956. An attempt at explaining injector dead time in a different way, while trying to make it easier to understand what is going on. Moderator: Matt. PMAS claims these MAFs can be used post turbo, but you should take into consideration: 1. Once again instructions for board installation and communications diagnostics are on the NIStune website. Just run e85 all the time and tune based off that. Last post Re: Nistune on Youtube and Fa…. Car: A Sexy Mobile, 1993 Nissan 240sx 180sx Hatcher. 「 LINK 」「 e-manage 」「 Power-FC 」等々の取付け&セッティングもお任せ下さい. Our Stage 1 upgrade brings out the full benefit of the Y-pipe and incorporates a recalibration of the GT-Rs engine management system. USB Drivers for Win98 (320KB zip) USB Drivers for WinXP to Win10 (2. Ecumaster free tuning software download. so far any possible speed limiters on the 1993 P10 file are FF which means they are not used. 0 to new FP2. Enthusiasts welcomed a new engine series to the Skyline range, the RB-series twin-cam inline six. 2. Bought a 84 Z31. 1. Description. The car shows well but does have a few. Sales price: $ 165. That bowl is way too small for a full sized cat. 00. Download Nistune Mapping Guide - NIStune -. Yes. No cable is 100% immune but we've now done a considerable testing and design modification to make our cables handle large amounts of noise before data integrity becomes a problem. 00. . They are also typically over advanced stock and the knock control constantly pulls timing out. ECU eprom upgrades. This keeps people from just turning up the boost to get more power. In this video, I go over the basics of getting your NA2T up and running using Nistune to tune the ecu. Mate, i set up mine with fuel only efi turbo, spent upwards of 7k ( most of the cost was aftermarket ECU/ wiring up and unsatisfactory tune). PlateUp! is a 1-4 player frenetic feed ‘em up that combines chaotic kitchen and restaurant management with strategic planning and development to serve up a delightful roguelite unlike any other. 2 is the most frequently downloaded one by the. The system is being constantly developed by Matt and Pete in Australia. Joined: Sat Jan 28, 2006 3:45 pm. We only support vehicles listed below. Type 1 board. Type 1 board. Nistune Z32 ECU Modifications for R33 RB25DET Skyline Installation. Trouble starting engine – some tips The golden rule here is that if the engine isn’t starting (or starts and runs very badly) then don’t keep trying. $3800 Haltech ECU (fitting and dyno) $2100 for new GT3071 turbo. EN. Before being subsequently replaced by the 2. i'm pretty well versed in nistune tuning. S13 (CA18DE/DET) Workshop Tuning Notes - Nistune is a PDF document that provides practical guidance on how to tune Nissan engines using Nistune software and hardware. 5” and 4” housings into a 3” turbo intake. NIStune is a real-time tuning suite designed especially for Nissans which provides the ability to: • Retune factory Nissan Engine Control Units (ECU) • Monitor gauges and map tracing on your ECU. This wire should have +12v with the key turned to the "on" position. I have a 1990 300ZX TT with an AUTO. We've been working hard with Matt from NIStune to develop the NIStune product line. Post by 8-bit » Tue May 04, 2010 7:46 am. Go to for more informat. Datalogging is another strong feature, everything is logged, savable and reviewable. However NIStune needs some additional information to let it know more about the type of ECU you are using Nistune • Use ‘Stream mode’for high resolution logging • Use the log button to open the logger • Hover mouse above buttons for short cut keys. Nistune NTProg Version 3. Boost bis einer weint! - - -#jpperformanceDiese Produkte nutzen wir alltäglich!* Euch entstehen kein. Nistune Feature, Part 4 – Fuel System. Same as above plus ,Afr's 11. if you have some, pm me. Location: South Africa. General Documentation. Welcome to NIStune. It's a great system to use - you don't even need to see the daughterboard once installed. 15° base timing at running temp/idle. We now build and supply NIStune products (hardware) to Matt and also look after trade orders. Sales price: $ 220. It is important to understand the main difference between a modern engine management system and something like Nistune: safety features. Description. Updated 2/4/2019. When trying to acheive 14. Engine protection and monitoring is important to me and I’d like to convert to. Antares Auto-Tune EFX. Consult interfaces are purchased separately. General Documentation. Nistune Z32 ECU Modifications for R33 RB25DET Skyline Installation. visually the main boards look exactly identical, but there are (hardware I/O) differences. Open up TunerStudio and connect your ECU. This one provided the biggest interference problem. This is about 16-17psi. To view the boost pressure enable this consult register. Nistune Mapping Guide - NIStune - Realtime ECU Tuning was published by on 2015-06-27. S13 (CA18DE/DET) S13 (SR20DET) S13 Type-X (SR20DET) 200SX. The stock rb25 maps go way retarded up in the 96 range as a safety measure incase someone experiences boost spikes or tries to run too much boost. I'm assuming NIStune didn't expect the board to be used with a socketed ECU. The VQ production started in 1994 and has appeared in top engine lists and won awards every year since then. Nistune Developments may, from time to time, revise or update the Software or Hardware. we are now accepting submissions to next year's z31 calendar. 7. This will provide maximum reliability of the connection, as the USB wire makes a much more noise susceptible ‘antenna’ than. 1985 Z31 2+0 turbo Black. There are 0 Nissan Silvia - S12 for sale right now - Follow the Market and get notified with new listings and sale prices. 1000cc rochester injectors. 3. Nistune ROM File Pack 2. Replaced both clutch and main seal but never sent back to the dyno. Nistune software also provides a user friendly responsive graphical interface to perform modifications. The Nistune hardware and software solution provides a means for the car enthusiast to retune their vehicle whilst retaining their factory ECU and its default programming. Licence email: Enter licence email address. Licence email: Enter licence email address. SR20DET - pulling timing under ~3k RPM. 6266,gato mani,prec. Re: (virus77) Postby ST240 » Fri Oct 23, 2009 8:49 am. 2. Software licence for individuals (or workshops) tuning only several vehicles. Nistune Type 2 Board 8-Bit w/ Individual License, 90-94 Twin Turbo, 90-92 Non-Turbo Z32 $ 440 00. Ready for the NIStune board after removing the old chip with the proper tools. Anyway I've been debating the JWT tune or going the Nistune route. Nistune real time boards provide a way to make your factory Engine Control Unit (ECU) fully remappable, similar to aftermarket Engine Control units for a fraction of the price. Adaptronic Eugene free tuning software download. Not sure if this helps any got this off nistune, i am going to have to look up the wiring to test the maf directly i have both Z32 VG30 (80mm) Wire A - Not Connected (orange) Wire B - Signal (shielded white) Wire C - 12v Ground (black) Wire D - Signal Ground (shielded black) Wire E - 12v Power (white) Wire F - Not Connected and R32. Nistune. It is the amount of time between the point where. In the beginning, this isnt. Covers newer tables added to upcoming Nistune releases. This shows the installation from beginning to end - nothing is cut out, nothing is sped up. Ensure that you use an air filter prior to the turbo in all MAF setups to ensure straight airflow. He also claimed they are more reliable in his experience. Benefits in my mind are newer tech, more active tuning support/community, bypassing the limits and quirks of the MAF, being able to centralize. PLMS Nissan Consult Interface USB Cable, Nistune, Datscan, etc $ 119 00 $ 109 95. 00. 00 Tax amount: $ 20. AEM UEGO support was the biggest plus for me, NiStune is the only other software that supports UEGO, but paying $200 just for UEGO data-logging doesn't sound appealing to me . 95. Fuel Pressure Adapter for 2011-2016 Ford F-150 3. Posted July 3, 2017. 17% off. there was a 1. Realised Kurapika is a guy, really disappointed. . Discount -$ 38. The NIStune hardware and software solution provides a means for the car enthusiast to retune their vehicle whilst retaining the factory ECU and its default programming. Minimum requirement is Nistune with Feature Pack. Location: Adelaide, Australia. This should fix it and make Calibrate AFR Table available. Once again instructions for board installation and communications diagnostics are on the NIStune website. Im 20 episodes in and kinda let down that he isnt a she (also feel a bit silly for not noticing, not been paying super close attention until episode 10 or so) Was like, yes! Finally an anime where the girl isn't a near useless love interest, she is actually a badass. See full list on conceptzperformance. $250 for steel to make manifold and 3" dump. 21 (EXE) Released 15 Oct 2022. This sheet provides the various MAF pin outs used for wiring in a different MAF to your Nissan. Nistune Type 1 board Base price: $ 300. A Nistune Base Image Programmer is required to reprogram the board using the NTProg Software. The 3 resources I used were:!!!!*DO NOT USE THE "AUTO ADJUST LOAD SCALES". NIStune is a real-time tuning suite designed especially for Nissans which provides the ability to: Retune factory Nissan Engine Control Units (ECU) Monitor. - resize injectors (if aftermarket) in my case flow rate of 560cc/min @ 60psi. Nistune ECU Tuning (note:For Nissan Engines Only) - can be identified on my FC Media Channel under 'FCTuningNistune Solution' I am a fully approved Nistune Dealer & Tuner and part of Nistune Australia beta test team for software, firmware and hardware. Sales price: $ 165. Using a z32 ecu to run a rb25 with 1000cc injectors and e85. People tend to adjust ECU mapping by fitting apexi powerfc or a nistune daughter board. The only main differences when using this solution: - The R33/R34 models both use different O2 sensors (Titania vs Zirconia). . Is NISTUNE my only option? I live in the Detroit, MI area. Fuel injector dead time along with the other 4 definitions is the amount of time it takes the fuel injector to go from open to close. Adaptronic Eugene free tuning software download. Ensure that you use an air filter prior to the turbo in all MAF setups to ensure straight airflow. 7. (proceed to step 3). Covers ECU functionality and how the fuel and ignition are calculated and the tables used. 1lvvdq 0$) 3lqrxwv 7kh iroorzlqj slqrxwv duh xvhg iru dvvlvwlqj zlwk xsjudglqj \rxu 0$) vhqvru 6rph qrwhv 6hh rxu 0$) 7hfkqlfdo qrwhv grfxphqw iru 0$) sodfhphqw dqg lqvwdoodwlrq ehiruh ilwwlqj \rxu 0$) Training Documentation. 5” and 4” housings into a 3” turbo intake. NO – Contact Nistune for further support with board information and any information which you can provide us. idle fuel pressure @ 20psi. Someone tuned it probaply over ten years ago and the car has been working well with it so it would be convenient for me to just get it repaired. Attention! Your ePaper is waiting for publication! By publishing your document, the content will be optimally indexed by Google via AI and sorted into the right category for over 500 million ePaper readers on YUMPU. Re: Running w/o idle air control valve. (Nistune) (Knock Sensor) I have an SR20DET Redtop in my Silvia. Re: Low RPM hesitation (onepuff) If you had any type of consult program like Nissan Data Scan or Conzult, etc. software the vendor ID may have changed and NIStune will ask you to reset it Hints: Mark your emulators as ODD and EVEN. Post here where your issue is not tuning specific but more of a sensor or mechanical issue. 46mm wg,bigger fmic,mspnp2,z32 trans,spec twin,q45 rear,full energy bushings. 9258 or later with this functionality (improvements have been made) Tracing can occur in Tuner Mode or. Nistune also provides data logging and playback facilities, the first available for legacy type 1980s Nissan JECS/Hitachi ECUs. TunerPro is a free tuning software designed to enable you modify the calibration data, known as original file, used by vehicle engines and transmissions. I'm interested in peoples _experiences_. Following Nistune USB device installation, configuration and connection, pressing the ‘USB Consult’ button should highlight in red, and viewing the ‘Consult Display’ should show the battery, temperature and AFM voltages. Updated 2/4/2019. NIStune has provided a base image which consists of the Z32 base with R33 maps/tables merged. Get your laptop.