i had one on my stealth and it didn't do much of a damn thing. But I could tell people i had one. Actually, no, I was ashamed to tell people i had one....

 

I will put my 2 cents in since my friend added this to his Silverado. He has headers, gibson cat-back, k&N cold air. Lets just say that we did feel a different but definitely not 25% more like 5% and imo thats generous. Another thing i noticed it sucked up the gas that no other. In about 30 miles the fuel gauge dropped 1/4 HE finally got the company to take it back after a month of testing. Personally after going through with that i would not get one for my camaro. hopefully this helps you out alittle.

 

i talked to my friend w/ the 88 mustang again and he said that it was not working right. i think that it is one of those things that you get and you want it to make the car so much faster that you think it is going faster even tho it isnt...