So im about ready to order the hahn full exhaust system header, down pipe and 3in cat back but looking around to see what everyone else has i dont see to many people with this system. my question is why and is hahn a good set up if not what would be a good set up i want to go header down pipe and cat back i want the best set up. any advise would help.

 

i heard that vibrant is one of the best and its a 3 inch ..there header and dp i think are 3 inch also but im not 100% sure. hope this helps

 

I have the Hahn header with Random downpipe and GMPP catback. Good sound and good power.

 

what are your mods that will justify a 3in system

because if you dont have any crazy mods than a 2.5-2 3/4 would be perfect that way you can keep some tq and still get nice power
im running a 2.5 no res. magnaflow, and gmpp manifold sounds insane

my supporting mods are 2.9 f5cai

 

my mods are gm stage 2 2.79 pulley, ca heat exchanger, dual pass intercooler, injen CAI, engine dampner, tranny mounts, B&m short shifter, one step colder plugs. just need exhaust to be complete.

 

youll never be complete

 

i KNOW but ill be at a good stoping point

 

i would say 2.5 inch for anything above a 2.75 pulley
three inch is for huge power

 

so i have been listening to exhaust clips all day an one of my favorites is the ark cat back. i was wondering if anyone knew anything about it(hp gains, tubing size,where i can find it)also wondering how well it would go alon with the hahn down pipe and header.