2.4L LE5 Performance Tech 16 valve 171 hp EcoTec with 163 lb-ft of torque

2.5 exhaust opinions

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Old 08-16-2012 | 07:52 AM
  #26  
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Old 08-16-2012 | 08:38 AM
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https://www.cobaltss.net/forums/gene...-model-254160/
Old 08-16-2012 | 08:58 AM
  #28  
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Thanks! Ill have to check it out after work
Old 10-07-2012 | 03:43 AM
  #29  
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Originally Posted by feerme7
Not spending $900 on exhaust for a cobalt. If anything I'll just stick with my stock catback, I already have the muffler on anyways.
I just figured having the 2.5" piping would make flow better.
But not worth $900
see this is what i wanted to do. i already have a magnaflow muff and res on stock piping. i wanted to get the exhaust tubing http://www.mandrelexhaustsystems.com...EXHAUST/Detail from them to replace the stock. so you guys would not recommend that?
Old 10-08-2012 | 10:37 PM
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Here's my build, from the header back. Mind that I live in Kansas, which is currently free of emissions testing:

>Custom Header (Inlet/ Outlet: 1.625" X 0.875" (Oval)/ 3.250") - Part: $110 - Labor: $0, done myself
>Resonator Delete (Replaced with 2.5" piping) - Labor: $20 for 30 minutes
>Catalytic Converter Delete (Replaced with 2.5" piping) - Labor: $40 for 15 minutes and an illegal act [:
>Cut Axle-Back piping, (Replaced with 2.5" piping) - Part/Piping: $25 - Labor: $40 for an hour
>Magnaflow Muffler with stock SS tip - Part: $116 - Labor - $20 for 30 minutes

Total cost for my custom header-back exhaust: $255

I have a guy thats about a 20 minute drive from my house at Big O Tire that welds for pretty reasonably cheap.
Old 10-08-2012 | 11:34 PM
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still awaiting for an answer
Old 10-09-2012 | 03:20 PM
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imo.. I would only do that if you can hire a cheap welder o.O
Old 10-09-2012 | 03:35 PM
  #33  
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I liked my slp catback with the factory manifold and downpipe. But with the zzp shorty and the cti 3" to 2.5" catted downpipe its ungodly loud and even just letting off the throttle on the highway for 10-15 seconds while in drive results in small pops

But when the car is turned off and sitting in a parking lot the system does look fairly stock

the slp is 2.5" stainless steel and 400 bux shipped.
Old 10-09-2012 | 07:36 PM
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Originally Posted by 06Cobalt2.4
imo.. I would only do that if you can hire a cheap welder o.O
I hit a big rock that i didnt see cause it wad night timeand it put a nasty dent right where the over axle begins that's another reason i wanna do it. I was told it shouldn't cost more than $30?
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