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.