CAI/ K&N Filters/ Underdrives

[Mr 5 0]

Pulleys are worth up to 10 HP, maximum. Aluminum is good, brands vary in quality. No suggestions.

The K&N in the stock airbox works fine and it's cost effective.

The full fenderwell cold air intake kits are over $100. and have some fitment issues. HP gain is about 3, tops.

Not a big HP boost but they sound great at WOT, clean up the engine compartment and 3 HP is still 3 HP. Only trouble is, you won't really notice it.

I use the Moroso kit which has a plastic intake tube but fits perfectly and never a problem in 3 years.

With a CAI kit and underdrive pulleys, you're looking at about a 10 HP gain, maybe 12, maximum.

Your money might be better spent on replacing the rear gears for 3.73's. No HP gain but big acceleration gain.