Join Date: Apr 2002
Location: Los Angeles, CA
I have heard from a number of people that shorty headers don't do much on the 99 and up GTs. A friend of mine who does a lot a tuning on Mustangs says that long tubes allow you to add more timing at the top end but not much more then that. I am in the same position you are... wondering if the cost is worth it???
2006 GT - Paxton NOVI 2200 Intercooled Supercharger, FRPP Twin 65mm Throttle Body, Diablo Predator and MAFia, FRPP 3.73 Gears, Eibach Pro-Kit Springs, Tokico D-Spec Shocks/Struts, Metco Billet Lower Control Arms, DBA Slotted Rotors, Hawk Pads, Goodrich SS Brake Lines, Shelby Razor 20"X9" wheels.