10 Best Car Engine Computers

#1 Best Pick

LS Swaps How to Swap Gm LS Engines into Almost Anything

Brand: Cartech

Features 375 color photos
Section on mounting kits explains how to install these engine in a variety of cars
Shows how to choose the most suitable fuel pump, exhaust system, wiring harness, and electronic control module
144 pages long
It goes over all the compatible transmissions for an LS engine

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#2 Best Value

GZCRDZ Battery Tester Code Reader Read Vehicle Information OBD2 Scanner Multi-Language Check Engine System Car Diagnostic Tool (Black)

Brand: GZCRDZ

【Multi-Functions】Practical Multi-Functions OBD2 Scanner code reader features built-in OBD2 DTC code lookup library, which help you to determine the cause of the engine light. Read Code, Erase Code, View Freeze Frame, I/M Readiness, Reading Vehicle Information, Data Flow, Live Data Curve, O2 Sensor Test, EVAP System Test, Read Battery Voltage, etc.(Note: It cannot work with non-OBDII systems, including ABS / Airbag / Oil Service Light, etc.)
【Wide Capability】Support all OBDII protocols such as KWP2000, J1850 VPW, ISO9141, J1850 PWM and CAN. Compatible with most 1996 US-Based, 2000 EU-Based and 2002 Asian cars, and newer OBD II & CAN domestic or import vehicles. Supports 10 languages, include English, German, Dutch, Spanish, French, Italian, Russian, Japanese, Korean and Chinese.
【TFT Color Display】Designed with a clear display TFT color screen, compared with other monochrome screens, the display effect is better. No need any battery or charger, OBD2 scanner gets the power directly from your vehicle through the OBDII Data Link Connector. (There’s a transparent screen protecting film on the screen surface. If any scratches on the film, just tear off the screen protecting film.)
【User Friendly】The Plug & Play portable car diagnostic tool is equipped with a 2.5 feet long cable and made of a very thick flexible insulator. The mini OBD2 code reader size is 5.11 x 2.75 x 0.98 inch and weighs only 5.08 ounces. There are 5 buttons on OBD2 Scanner: The scroll up/down, enter/exit and one key I/M Readiness button.
【Premium Material】 Engine fault code reader is made of premium ABS plastic, impact resistant, not easy to break, lightweight, easy to carry.

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#3 Budget Pick

PAJ GPS - Vehicle Finder 4G 1.0 – Real-Time GPS Tracker with Direct Battery Connection (9–75V) for Cars, Motorcycles, Trucks & Fleets – Global GPS Tracking Device – Subscription Required

Brand: PAJ GPS

EVERLASTING BATTERY – With the VEHICLE Finder 1.0 4G from PAJ GPS, you'll never have to worry about your GPS tracker running out of battery. The device connects directly to your vehicle's battery (9-75V), providing a permanent power supply. Ensure your vehicle's safety and security with the everlasting battery of the PAJ GPS VEHICLE Finder 4G 1.0
FUNCTIONALITIES: Real-time tracking, detailed route history for the last 365 days, and instant alerts for motion/collision, departure from security zone, speed, device removal, vehicle ignition, and low voltage. Maintain total control of your vehicle!
EASY INSTALLATION and VERSATILITY: Our tracker easily installs on the vehicle's battery, remaining hidden for increased discretion and security. It's also ideal as an anti-theft protection for various types of vehicles: cars, motorbikes, trucks, quads, and even machinery.
4G NETWORK CONNECTION: Vehicle Finder uses 4G connection, the fastest and most reliable option. PAJ GPS is always at the forefront of innovation and development to provide the best technology and service. SIM card included and inserted, ready for use!
SUBSCRIPTION: Includes a SIM card and offers a lifelong device replacement, along with 24/7 customer support in multiple languages. Control your locators with our free app compatible with Android and iOS and share it with the whole family. Choose between the Premium or Basic plans, with options from monthly to every 2 years, from $ 7,50 (AUD) per month, with payment frequency depending on the duration of the subscription. See pricing details in images.

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#4 Top Choice

39125-2B075 391252B075 Car Engine Computer Board ECU Electronic Control Unit Compatible for Hyundai

Brand: FEHIDOWO

High-quality materials: have good heat resistance and shock resistance, and run stably in harsh working environment.
Performance improvement: after replacement, the engine has strong power output, faster acceleration and improved fuel economy.
Precise adjustment: Real-time monitoring of engine speed, temperature, pressure and other parameters, and making reasonable adjustments.
Adaptive function: it can detect and diagnose faults and ensure that the engine is always in the best running state.
Programming required: this product needs programming before it can be used. If we need programming, please reply to the vehicle VIN.

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#5 Popular Choice

PAJ GPS - Vehicle Finder 4G 2.0 – Real-Time GPS Tracker with Direct Battery Connection (9–75V) for Cars, Motorcycles, Trucks & Fleets – Global GPS Tracking Device – Subscription Required

Brand: PAJ GPS

EASIEST & FASTEST GPS TRACKING – Ensure your vehicle's safety and security with the everlasting battery of the PAJ GPS VEHICLE Finder 4G 2.0. Our GPS tracking devices come with a built-in SIM card that works globally, providing you with the best available 4G LTE network and unlimited distance real-time tracking. You can receive location alerts from your GPS tracker directly on your iOS or Android device, making it easy to stay informed about the location and movements of your assets.
SMALL AND VERSATILE – Protect your vehicles from theft with the discreet PAJ GPS VEHICLE Finder. Our tracker is compact and lightweight, just 2.82 ounces and 3.98x1.97x0.75 inch. Ideal use as a car GPS tracker, a motorcycle tracker, and more. The set includes everything you need to get started, the GPS Tracker Vehicle, a car charging cable, a self-adhesive velcro sticker, and an M2M SIM card. With the PAJ GPS Finder-Portal, you can easily activate your tracker, and start tracking with ease.
EVERLASTING BATTERY – Stay connected to your vehicle's location 24/7 with our everlasting battery GPS tracker. This device can be directly connected to your vehicle's battery, providing a permanent power supply so you never have to worry about recharging. With an internal battery life of 12 hours in standby, you can always rely on this GPS tracker to provide accurate and real-time information about your vehicle's location.
EASY TO USE SOFTWARE & FEATURES – Our tracker has worldwide coverage, allowing you to locate your vehicle in the US, Canada, Mexico and +100 countries. 365 days of route memory, you can easily retrace your vehicle's steps. With easy access to your portal settings, you can choose different alarm options to best suit your needs. Whether you're a fleet manager or just want to protect your personal vehicle, our GPS tracker is the perfect solution for effortless and reliable tracking.
SUBSCRIPTION: Includes a SIM card and offers a lifelong device replacement, along with 24/7 customer support in multiple languages. Control your locators with our free app compatible with Android and iOS and share it with the whole family. Choose between the Premium or Basic plans, with options from monthly to every 2 years, from $ 7,50 (AUD) per month, with payment frequency depending on the duration of the subscription. See pricing details in images.

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#6 Top Pick

Tuning The A-Series Engine 3/e: The Definitive Manual on Tuning for Performance or Economy

Brand: Haynes

Haynes Publishing

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#7 Top Pick

ANCEL FX2000 OBD2 Scanner ABS SRS Airbag Transmission Engine Car Scanner Diagnostic Tool, Automotive OBD II Fault Code Reader Check Warning Lights for All Vehicles, Free Lifetime Upgrade

Brand: ANCEL

【5 IN 1 CAR DIAGNOSTIC SCANNER】Do you feel puzzled when the warning lights for transmission, ABS, SRS airbag, or check engine start flashing? The obd2 scanner engine/abs/srs/transmission car diagnostic tool can help you out. It conducts in-depth scanning to quickly pinpoint the problem components in your car with DTC definitions and turn off the warning lights once the vehicle's issues are resolved. This scan tool empowers you to understand your car better and perform your own repairs, saving you from the hassle of going to the autoship or spending extra on repairs
【ONE-CLICK AUTO DIAGNOSIS】: Every driver deserves to understand their vehicle! he ANCEL FX2000 car scanner features one-click auto diagnosis, automatically identifying your vehicle’s make, model, and year. With a single tap, no manual input or complicated setup is required—even first-time users can effortlessly access real-time data, diagnose issues, and clear fault codes to turn off warning lights with ease. Say goodbye to overpriced repairs—all at the push of a button
【PLUG AND PLAY - EASY TO USE】Get hassle-free car diagnostics with the ANCEL FX2000-US OBD2 Scanner Diagnostics Tool. This practical and versatile tool is easy to use and requires only 3 simple steps to connect to your car for diagnosis, without any complicated operations. Even beginners can use it to read data and understand fault codes with ease. What's more, this reasonably priced OBD2 scanner can help you determine if your car is ready for its annual inspection via the I/M readiness menu, saving you money and ensuring your safety
【COVER 10000+ MODELS ＆ 60+ CAR MAKES】This obd2 scanner with abs and srs is designed to accurately monitor and diagnose problems on over 60 different car makes and more than 10,000 vehicle types. It supports most US vehicles from 1996 onwards(Not fit for Chrysler,US Ford,USA GM,Jeep,Dodge these car brands from 2018 onwards), most EU vehicles from 2002 onwards, most Asian vehicles from 2008 onwards, and most Japan cars after 2005 or newer OBDII and CAN vehicles, both domestic and foreign. Pls NOTE NOT support the heavy truck. To confirm compatibility, you can con-tact us via Amazon me-ssage. Select correct vehicle model menu & ensure no hardware/wiring issues for accurate results
【FULL OBD-LEVEL DIAGNOSTICS TOOL】: Quickly determines the cause of engine system faults, reads current, permanent and pending codes. After the repair, clears the codes and turns off the warning light. In addition, the FX2000 engine code reader also displays important OBD II advanced data such as fuel, live data and other manufacturer-specific parameters in real time to ensure that the engine ECU is operating correctly and safely, saving vehicle owners a lot of time and money in maintenance.

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#8 Top Pick

FOXWELL NT201 OBD2 Scanner Code Reader for Cars and Trucks - Reset Check Engine Light, Read and Clear Fault Codes, Live Data Diagnostic Tool for All Cars Since 1996

Brand: FOXWELL

Read and Clear Fault Codes: FOXWELL NT201 car code reader can quickly detect the issue that triggers the check engine light, reads and clears engine fault codes, and allows you to turn off the MIL after fixing the issue, avoid costly trips to the mechanic
Live Data and DTC Reference: Get live data like ETC, MAP, and RPM to identify engine issues accurately. Equipped with built-in trouble code library to provide instant code definitions so you know exactly what the problem is and how to fix it.
One Key Emissions Test: Check your vehicle's emission readiness status with one-click I/M readiness hotkey. This obd2 scanner diagnostic tool provides visual indicators (red/yellow/green lights) to guide you through the process, making pre-inspection emissions checks easy.
Extensive OBDII Modes: Features advanced OBDII functions, including O2 Sensor Test Mode 5 for CAN protocol vehicles. This obd2 scanner helps diagnose engine performance by analyzing oxygen content in exhaust gases, which is important for addressing engine efficiency issues.
Broad Compatibility: NT201 engine light code reader compatible with all OBDII/EOBD vehicles from 1996 onward, including cars, light trucks, SUVs, minivans, hybrids etc. Contact us to confirm compatibility with your vehicle if unsure.

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#9 Top Pick

FOXWELL NT301 OBD2 Scanner Live Data Professional Mechanic OBDII Diagnostic Code Reader Tool for Check Engine Light

Brand: FOXWELL

[Vehicle CEL Doctor] The NT301 obd2 scanner enables you to read DTCs, access to e-missions readiness status, turn off CEL(check engine light) or MIL, reset monitor, read live data and retrieve VIN of your vehicle. The fault code only can be cleared by NT301 after car repair finished, as like all the obd2 scanner's working principle. The fault code will appear again even though you cleared before, if you don't repair the car well.
[Accuracy & Streams] Live data graphing and logging. Accurately read error codes for most Worldwide cars, SUVs, light trucks and 12V diesels equipped with Obd2. Graphing live vehicle sensors data allows you to focus on any suspicious data and trend. It's a basic code reader and doesn't support to scan and read codes about any car systems like ABS, Battery, TPMS, SRS, SAS systems. It also DOESN'T support any special functions like EPB reset/battery registration/oil reset/programming/Relearn/Camshaft position or battery test.
[Read Fault Codes] About the read code funtion needs to be in the ignition on state and if the check engine light is on. If the vehicle is compatible with NT301, please select correct menu & ensure no hardware/wiring issues/obd2 interface damage for accurate results. The correct menu: Select OBDII-> Wait for seconds-> Select Read codes
[S-mog Check Helper] Read/Erase and I/M readiness hotkeys make it easy to use the car computer reader right out of the package. Red-Yellow-Green Leds and build-in speaker indicate the readiness status for confident e-missions test.
[OBDII Protocols & Compatibility] The NT301 supports OBDII protocols like KWP2000, J1850 VPW, ISO9141, J1850 PWM and CAN. The device is compatible with 1996 US-based, 2000 EU-based and Asian cars, light trucks, SUVs. Kindly check the vehicle compatibility before the purchase since the function comatibility and car compatibility vary from different car models, year and vin.

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#10 Top Pick

ANCEL AD310 Universal Enhanced OBD2 Scanner Car Engine Fault Code Reader CAN Diagnostic Scan Tool, Read and Clear Error Codes for 1996 or Newer OBD II Protocol Vehicle (Black)

Brand: ANCEL

[OBDII Protocols and Car Compatibility]: Many cheap car scan tools do not really support all OBD2 protocols. This is not the case with the AD310 obd2 scanner as it can support all OBDII protocols such as KWP2000, J1850 VPW, ISO9141, J1850 PWM and CAN. This car diagnostic tool also has extensive vehicle compatibility with 1996 US-based, 2000 EU-based and Asian cars, light trucks, SUVs, as well as newer OBD2 and CAN vehicles both domestic and foreign.
[Check Engine Light Doctor]: The ANCEL AD310 obd2 scanner is one of the best-selling OBD II scanners on the market and is recommended by Scotty Kilmer, a YouTuber and auto mechanic. It can easily determine the cause of the check engine light coming on, quickly read and clear diagnostic trouble codes, read live data & hard memory data, view freeze frame, perform EVAP system tests, check I/M monitor readiness status, and collect vehicle information. Instead of taking your car to a mechanic shop, you can use it to check car trouble codes, fix issues by yourself, and determine whether your car is ready to pass the annual inspection.
[Accurate Fast and Easy to Use]: The AD310 code reader can help you or your mechanic understand if your car is in good condition, provides exceptionally accurate and fast results, reads and clears engine trouble codes in seconds. If you want to find out the cause of the check engine light, this device will let you know immediately and fix the problem right away without any car knowledge. No need for batteries or a charger, get power directly from the OBDII Data Link Connector in your vehicle.
[Sturdy and Compact]: Equipped with a 2.5 foot cable made of very thick, flexible insulation. It is important to have a sturdy scanner as it can easily fall to the ground when working in a car. The AD310 obd 2 scanner is a well-constructed mechanic tool with a sleek design. It weighs 12 ounces and measures 8.9 x 6.9 x 1.4 inches. Thanks to its compact design and light weight, transporting the device is not a problem. The buttons are clearly labelled and the screen is large and displays results clearly.
[Home Necessity and Worthy to Own]: This is an excellent car diagnostic scanner for travel or home use—unlike Bluetooth OBD2 scanners that require an internet connection, it works completely offline, making it reliable anywhere. Lightweight and compact (just 12 ounces!), it slips easily into your backpack for on-the-go repairs during road trips or fits neatly on the dashboard for quick access in your vehicle. Beyond portability, it delivers fast, accurate performance and covers various car brands, perfect for anyone needing a straightforward tool to check their vehicle.

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10 Best Car Engine Computers

LS Swaps How to Swap Gm LS Engines into Almost Anything

GZCRDZ Battery Tester Code Reader Read Vehicle Information OBD2 Scanner Multi-Language Check Engine System Car Diagnostic Tool (Black)

PAJ GPS - Vehicle Finder 4G 1.0 – Real-Time GPS Tracker with Direct Battery Connection (9–75V) for Cars, Motorcycles, Trucks & Fleets – Global GPS Tracking Device – Subscription Required

39125-2B075 391252B075 Car Engine Computer Board ECU Electronic Control Unit Compatible for Hyundai

PAJ GPS - Vehicle Finder 4G 2.0 – Real-Time GPS Tracker with Direct Battery Connection (9–75V) for Cars, Motorcycles, Trucks & Fleets – Global GPS Tracking Device – Subscription Required

Tuning The A-Series Engine 3/e: The Definitive Manual on Tuning for Performance or Economy

ANCEL FX2000 OBD2 Scanner ABS SRS Airbag Transmission Engine Car Scanner Diagnostic Tool, Automotive OBD II Fault Code Reader Check Warning Lights for All Vehicles, Free Lifetime Upgrade

FOXWELL NT201 OBD2 Scanner Code Reader for Cars and Trucks - Reset Check Engine Light, Read and Clear Fault Codes, Live Data Diagnostic Tool for All Cars Since 1996

FOXWELL NT301 OBD2 Scanner Live Data Professional Mechanic OBDII Diagnostic Code Reader Tool for Check Engine Light

ANCEL AD310 Universal Enhanced OBD2 Scanner Car Engine Fault Code Reader CAN Diagnostic Scan Tool, Read and Clear Error Codes for 1996 or Newer OBD II Protocol Vehicle (Black)

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