What is considered the biggest restriction's on the 03's? Is it the exhaust or intake? Not enough boost? In other words what kind of HP gains have you seen with "x" mods?
My buddy has an 04 cobra, stock air intake. He had an X pipe with cats and a borla stinger exhaust. With less than 1000miles the car dynoed at 398 with 402tq. Since the average stock cobras dyno around 366 I would say exhaust