my exhaust plans

[NC325iC]

alright assuming i get a job this summer (im lookin) i want to get new exhaust on the beast my plans:

-bavauto headers
-y pipe to 2.5
-resonator (i was thinking hushpower)
-muffler

my main question is, if i run a 2.5" tube all the way back and the muffler has a 2" inlet would that totally defeat the purpose of having 2.5", would it completely negate getting the headers (headers reduce the back pressure where as this would increase it again), the muffler i was thinking of is a universal remus muffler with a single oval tip

[e30_325es]

Yes it would. I have virtually the same exact set up you are looking at, bavauto headers, y-pipe to single 2.5. I have a highflow cat (for now) but a magnaflow muffler, it's all 2.5". It is very loud, so I would suggest a different muffler, but maintain the same inlet size if you can. I'm planning on re-doing the y-pipe back with a moroso resonator (shorter so it'll fit, very tight down there), and a flowmaster 40series of some sort.

[NC325iC]

yeah i want it to be moderately loud but not annoying, and my biggest fear is rasp