agree with fatbooty



Go waste your money on the "best" brands and see how much whp you get. I'd really like to see it. My stock GSR got 141 whp on a mustang dynometer (doesn't inflate #'s like a dynojet) and 149 with I/H/E. You MIGHT get 5whp more but it's not gonna make a difference at the track.

here's a hint, companies LIE to make their product sound better. I GUARANTEE you wont get 20-30whp.