ive been looking around at catbacks magnaflow, gmpp ect.

anyway these all run prices of 400+ bucks some over 600 close to 700 everyone knows this...

my question, how does custom pipeing work for the ss/sc? 2.5 inch with say a magnaflow muffler? anyone try this? how much the cost? a little cheaper?

 

alot of people do that.. as long as the exhaust shop is reputable, you should have no problems.
i got my custom 2.5" magnaflow done for $120. not including the cost of the muffler.

to answer your question: much cheaper. and also much better than GMPP.. because the GMPP exhaust systems are 2.25". i dont know if a custom one would be quite as good as a 2.5" from a vendor, but seriously, do you really care about a 1 hp difference?

 

thats a good price the local shop here told me 550 for the cat back magnaflow res and muffler in 3 inch though so mabey that was part of the price diff.
SO I got the dc cat back and it sounds lil loud in town but good at highway speed

 

so basically any shop can custom make you an exhuast system? i guess i didnt know/think of that....... how much did yours run you all together? how are the gains?

 

keep shopping... that is way too high

 

, thats what they are there for , just make sure its not crush bent , crush bent is restricted at the bends so a 2.5 inch exhaust is a 2.0

 

it was roughly 250 total. i have no idea what the dyno #'s for before and after would look like. my car has never been dynoed, regretably.
but with my ZZP 2.9", and AEM CAI my exhaust was getting a bit restrictive. so i went to the exhaust shop and had them make me 1... the difference is noticeable, but my cobalt isn't stock, so i can't say wether or not you would notice a difference on an otherwise stock ss s/c

i think a 3" exhaust may be overkill. we're talking about an ss s/c, not an STI.

 

depends where you live and 3 in is more expensive , a good price would be about 400 dollars id say

 

x2 i forgot that... you want mandrel bent tubing

 

thanks guys that made my day! didnt wanna spend 600+

 

another question...

can i get a catback now...and in a month or so just hook up my header and DP? or should i wait to get it all in one?

 

yeah 3" is deff a overkill. Even the gmpp 2.25 isnt that bad if your only going minor for modds. I was quoted crazy prices for custom exhasut aswell, depends where you go I guess... GMPP touring for me!