Underhood Automotive
Making Sense Of Mazda’s i-ACTIVSENSE ADAS

Most Mazda models require a static calibration procedure with targets mounted at precise distances.

Engine Build: 452 cid SB2 Small Block Chevy Engine

This 452 cid small block Chevy engine is one of Gibbons Motorsports more intense custom engine builds.

Oil Filter Inspection

Cartridge oil filters are easy to inspect, but canister oil filters give a limited view inside the holes in the base plate.

Engine Build: Stage 2 6.7L Twin Turbo Cummins Engine

This truck started as a $225 1949 Ford F1 and is now a more than $400,000 full-blown race truck.

Headlights: HID Diagnostics

Many sport and luxury import nameplate vehicles utilize high-intensity discharge (HID) lighting.

Engine Build: Evo Wagon – Turbocharged Evo 9 Engine

The goal is to make this turbocharged Evo 9 engine an 8-second, 1/4-mile, 1,000-hp monster.

How Ignition Coils And Plugs Find The Path Of Least Resistance

No matter if it is the secondary or primary side of the coil, inspecting the grounds should be one of the first tests.

Mitsubishi’s 4G63 and 4B11 Engines

Whether a customer has a 4G63 or the 4B11 engine, they are both great options for many different performance applications.

Honda B & K Series Engines

Honda’s K20 and K24 engines stand out when it comes to building performance vehicles.

Runners And Ports: How Modern Engines Manage Air

Variable-length intake runners change the length of the intake passages depending on engine speed and load.

Efficient Engine Operation – It’s All In The Timing

Fuel, Spark, Air and Compression are all clearly important, but if they all need to happen at the same time.

Engine Build: 612 cid Blown Big Block Chevy Engine

Hardcore Horsepower built this 612 cid big block Chevy engine with a 10-71 blower and Fast EFI to the tune of 1,000 HP.