Reviewed By Andrew P (LODI, CA) Reviewed for a 2006 Pontiac GTO —11/10/2015 8:15 PM
Everyone who said they can't hear the whistle or notice a difference probably didn't install it right. It rook me 25 min. I have a k&n air filter and it literally sounds like turbo building uo to boost. Notice the gas and power i would recommend this and buy this again great product