throttle body spacer
#1
#2
throttle body spacers are worth nothing more than an expensive paper-weight. they do nothing to help performance and I've heard from others that they actually can hurt performance. the only thing they do is create an annoying whistle upon acceleration. do yourself a favor and save your money. there are many bolt-on mods that you can invest your money in and actually see rwhp improvement.
the main 3: exhaust/intake/custom tunes
others: e-fans/underdrive pullies/gears/shift kit
hope that helps just a little bit
the main 3: exhaust/intake/custom tunes
others: e-fans/underdrive pullies/gears/shift kit
hope that helps just a little bit