Compare the best OBD2 diagnostic scanners for DIY repairs, tuning checks, and daily-driver troubleshooting before you spend on parts you may not need.
Find top aftermarket ignition coils for stronger spark, clean pulls, and dependable fitment. Learn what to buy for your street or boosted build today
Pro Street hits SPOCOM SF 2026 in San Mateo for a closer look at standout Bay Area builds, including a triple-rotor FD RX-7, 2JZ-swapped S30 240Z, NSX, S2000, R35 GT-R and more.
Use this automotive relay wiring guide to power lights, fans, horns, and pumps safely, with fuse sizing, terminal maps, and no-nonsense testing tips today.
Learn how to set ignition timing with a timing light, find true TDC, set base advance, and avoid detonation for a stronger-running street or track build.
Cabin air filter replacement clears stale odors, restores HVAC airflow, and helps block dust and pollen. Learn the signs, intervals, and install basics.
The sold-out 37th Annual Nostalgia Day Car Show brings hundreds of classic cars, muscle cars, street rods and custom trucks to downtown Livermore on September 27.
GM's new 6.7-liter LS6 isn't simply a larger version of the old LS. We examine its Gen 6 aluminum block, forged rotating assembly, revised cooling, 13.0:1 compression and new port-plus-direct fuel injection system.
Nissan is preparing a new-generation Skyline for December 2026. The four-door performance sedan could use a roughly 400-hp version of the Nissan Z's twin-turbo V6, while AWD and a six-speed manual remain possibilities.
LED versus HID bulbs: compare brightness, warm-up time, heat, lifespan, fitment, and road legality to choose the right lighting upgrade for your ride easily today.
Popular FAQ
How To Aim Your Headlights
The headlights on your vehicle serve to illuminate the road and any dangers that may lie ahead, but are too often neglected or ignored...
JDM Engine Buying Guide – Getting the best deal
So you've saved up enough money to finally make the jump to the engine swap you've always dreamed about. You've got the ideal JDM...
FAQ : Subaru WRX ECU Pinout
Subaru's WRX burst onto the scene in the late 90s, finally rewarding the legions of fans in the US with turbocharged boxer glory. Now...
How To Test a Ford Mustang Mass Airflow Sensor
The MAF sensor in your Ford is otherwise known as the Mustang Mass Airflow Sensor. The MAF is responsible for reading the airflow entering your...
FAQ : What is the ZC Engine?
Easily one of the most commonly mistaken and misrepresented of all Honda engines, there isn't that much information about the ZC engine. One of...
How To Fuel Pressure Regulator Troubleshooting
Whether your car is modified or not, fuel problems can be a headache to handle. Although there are many cases when your fuel pump...
OBDII – Honda DTC Trouble Codes
OBDII HONDA DTC Trouble Codes
P1106 BARO Circuit Range/Performance
P1107 BARO Circuit Low Input
P1108 BARO Circuit High Input
P1121 Throttle Position Lower Than Expected
P1122 Throttle Position Higher...
How To Test your Accord Fan Relay
When you are experiencing overheating issues with your Honda Accord, it can be from several different causes. From clogged radiators to water pump inefficiencies...
