More power is the universal dream of hot rodders, and bolt-ons are the easiest way to add that power. One of the most common questions were hit with is exactly how much power are various bolt-ons ...

No one around the shop could remember the last time we ran our 302 dyno mule, but it must have been five years ago. Fitted with a fresh set of AFR cylinder heads, the little beast started right up and ...

This video showcases a BMW M3 G80 on a dyno as it tests out a new valvetronic exhaust system and custom software tuning. With powerful revs, sharp throttle response, and plenty of sound, the session ...