Engine Performance Mods - Project Sonic Boom. Helping the 1.4L turbocharged four churn out some more ponies. HOT ROD Staff Writer Feb 10, 2014. See All 24 Photos.

We take a close look at performance upgrades for the Camaro V-6 engine, from basic bolt-ons to computer tuning. If you think you need an LS3, think again!

Diesel engines already have a growl to them, but if you want to take it to the next level, here are five ways you can do it -- no matter your budget.

What if we add a cold-air kit, headers, and perform a cam and head swap? these are some above-average modifications, especially to an engine as new as the 5.7 Hemi. the computer will realize the ...

If you have a favorite "myth" about how certain engine modifications actually cause a change in performance, let us know and we'll include them the next time we visit this part of the engine ...

That said, the engine keeps its 490 horsepower rating in base trim and 495 horsepower rating with the performance exhaust system. The 0-60 mph time for the Z51 car remains at 2.9 seconds, too.

First of all, play this short video and just listen. That throaty growl under acceleration is the result of the cold-air intake. It sounds great on this VW VR6, but it was even better on my 1.8T ...