Originally Posted by ANMVQ (Post 1851559)

Ok ready,., I if it where me wouldnt waste my $$$ on headers they are a PIA if you do it yourself or the cost to pay someone to install them is not worth the gain, If you have GEN 3's already, Get a cat back and I tune, you be close to 300 WHP and a good 245-255 WHTQ( Assuming you have a manual). When you get tired of that go FI if you want, But headers and HFC's are waste of $$$ to me. I made 298 WHP and 240 WHTQ on a mustang dyno, Auto 7 spd X Coupe, With Gen 3's, cat back and tune, stock cats and manifolds,

My sig numbers are of course FI, cat back ,Stock cats and manifolds.

Originally Posted by dmhenderson (Post 1851566)

Ok did some reading and I see the problem. The stillen headers are "shorties". The FI headers are an entirely different animal.

I think I'm gonna just do berk HFCs and the FI catback + uprev tune and be done with it (for now anyway)

Originally Posted by KaienZ34 (Post 1850292)

Not shorty headers, but the long tubes give a bit of power and lose a good bit of weight.

Originally Posted by dmhenderson (Post 1851567)

Yep it's a manual. I think you're probably right about the headers plus you run the risk of annoying/destroying the 02 sensors if you swap out headers.

Looking like FI catback exhaust + berk HFCs will be the way I go unless someone sees a huge problem with that setup.