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post #1 of 11 (permalink) Old 03-17-2008, 03:38 PM Thread Starter
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peoples opinion

what do you think is better a cat back exhaust or a custom made exhaust with the same results of 2.5"

2006 Chevy Cobalt LT
Synthetic oil
K&N air intake system
Custom 2.5" dynomax exhaust system
B&M shiftplus
B&M tranny cooler
Catless Downpipe
stainless steel pacesetter header
5900k light bulbs
2.4 intake manifold
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post #2 of 11 (permalink) Old 03-17-2008, 03:43 PM
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The results should be pretty similar as far as performance. IMO I'd say go with what's cheaper if you trust the shop your getting to do it...

"... but it's ok, we're going to QuakeCon!"



"Black Betty" 2007 Black LS Coupe.
Visual: Debadged, Painted front bow-tie(gloss black), Yourcobalt.com Sticker applied.
Audio: Stock head unit and speakers, 2 Rockford Fosgate P210S4's sealed enclosure powered by Rockford Fosgate P2002
Performance: Injen CAI Pow Coat Black. Front tires P195R15 Fuzions, rear still sport the stock conts.
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post #3 of 11 (permalink) Old 03-17-2008, 03:48 PM Thread Starter
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well I was probably thinking of going the same route I did on my old vehicle I did 2.5" with a magnaflow exhaust with a high flow catalytic converter,thats all I was able to do with the old vehicle which was a 99 nissan altima it was really limited on parts honestly.

2006 Chevy Cobalt LT
Synthetic oil
K&N air intake system
Custom 2.5" dynomax exhaust system
B&M shiftplus
B&M tranny cooler
Catless Downpipe
stainless steel pacesetter header
5900k light bulbs
2.4 intake manifold
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post #4 of 11 (permalink) Old 03-17-2008, 06:57 PM
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Personally i would get a cat back system. Its designed for specific sound and performance and will work well every time. IMO cat backs have a nicer tone to them anyway. But if you think you can get the same results and know how to get it done then go for it.

My turbo lag is your courtesy head start.
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post #5 of 11 (permalink) Old 03-18-2008, 04:29 AM
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i got lucky and got the GMPP Performance cat-back when it was $360. best mod to my car so far. love the sound. it's really up to you. i've seen a few custom exhausts. like stated before: if you trust the shop and they know what they're doing and it comes out cheaper, go for the custom.

2007 LS Coupe
Current mods: Debadged, DC Sports Carbon Strut bar, Eibach Sportlines, Injen CAI, GMPP Performance Exhaust

Planned: Rims/Tires, 2.4 Intake swap, HIDs, SS Bumpers, Eventually a Turbo
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post #6 of 11 (permalink) Old 03-18-2008, 01:32 PM Thread Starter
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well I actually got a free estimate today and it will cost me 180 dollars to do 2 in half piping for the exhuast,also from what I believe the guy said for 180 dollars he will do the header and downpipe as well,including the exhaust system and muffler.I think that is one of hell a deal

2006 Chevy Cobalt LT
Synthetic oil
K&N air intake system
Custom 2.5" dynomax exhaust system
B&M shiftplus
B&M tranny cooler
Catless Downpipe
stainless steel pacesetter header
5900k light bulbs
2.4 intake manifold
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post #7 of 11 (permalink) Old 03-18-2008, 03:30 PM
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Send a message via AIM to Chester
there is no other place that will ever beat that price go for it ASAP



Mod's So Far: AEM CAI, C.A. Header, 2.50 Magnaflow Catback Exhaust , ZZP Catless Downpipe, DC Carbon Strut Bar, Dropped on Progress Springs. Tinted, Fully Debadged, Custom front SS bumper,2 Audiobahn 10" w/JL amp, Lower Billett Grille, Sengen 18 x 8 rims wrapped in Capitol Sport UHP 225/40/18.

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post #8 of 11 (permalink) Old 03-18-2008, 03:54 PM Thread Starter
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the guy is going to call me on Friday actually,he didn't have the book on the dynomax mufflers so he said he is going to get another one and let me know,or I will go to murrays and grab the muffler which is the dynomax super turbo version,honestly wont make a difference but I believe murrays usually has that stuff for 10 dollars less

2006 Chevy Cobalt LT
Synthetic oil
K&N air intake system
Custom 2.5" dynomax exhaust system
B&M shiftplus
B&M tranny cooler
Catless Downpipe
stainless steel pacesetter header
5900k light bulbs
2.4 intake manifold
burzumaske20 is offline  
post #9 of 11 (permalink) Old 03-18-2008, 04:04 PM
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Quote:
Originally Posted by burzumaske20 View Post
what do you think is better a cat back exhaust or a custom made exhaust with the same results of 2.5"
I would go with the cat back simply because it was most likely they are built with mandrel bends. The custom shop wont have that kind of equipment for cheap.

2006 LS coupe, manual, Victory Red
Sportlines, FE5 struts, shocks, front swaybar, Progressive 22mm rear swaybar, Airlift load assist rear airbags, TWM ST shifter, smoothed TB, LSJ exhaust, debadged, demudflapped, Yokohama AVID Touring P195/60R15's. Soon to come 17x7 Motegi Tracklight 1.0. Best to date 15.402 at 90mph

"No friend ever served me, and no enemy ever wronged me, whom I have not repaid in full."
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post #10 of 11 (permalink) Old 03-18-2008, 06:40 PM
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Quote:
Originally Posted by Montecarloman View Post
I would go with the cat back simply because it was most likely they are built with mandrel bends. The custom shop wont have that kind of equipment for cheap.
manderal bends are slightly over rated and you can compensate for them with extra diameter to a certain extent.

I would go with a custom full exhaust over some name brand cat back. A cat back will give you only minimal gains if any at all, where a full exhaust will yield you some nice gains.

Repopulating yourcobalt.com one post at a time.

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