What kind of HP and Torque increase do you guys think I would get if I had Bassani headers, bassani x pipe w/cats, and my bassani catback? I know the sound will be incredible bassani does sound the best but how are they with performance?
Good question, I have never seen anyone running all Bassani...partly because the Mid Length headers are still fairly new....I don't know for sure but a guesstimate would be around 25 RWHP and torgue ??? RWHP.....well that was very little help wasn't it?
I have the mid-lengths, o/r x-pipe with borla, the sound is second to none...but as for performance wise, I felt 15-17 Hp and say about 20 lb of torque. Over all I'm happy with wat I got.
Last time 5.0 Mustang Magazine dynoed the bassani cat-back on a GT, they picked up roughly 10 hp and an additional 7 hp from the x-pipe (with some power/torque loss at the low end).
Expect slightly larger gains on a supercharged application (like the 03 Cobra).
I don't know what kind of numbers you would get by replacing the x-pipe and leaving the exhaust stock (obviously, when they bolt on BOTH the x-pipe and the cat-back, they're losing some backpressure going to the larger diameter pipe which causes the loss in low-end torque or a loss in boost if you're supercharged).
There's an old issue of 5.0 where they took their project GT (vortech SC) and they ONLY replaced the mid-pipe with a magnaflow x-pipe w/ cats and picked up ~30hp!!