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post #1 of 9 (permalink) Old 07-01-2009, 11:22 AM Thread Starter
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So I have been looking for Catback systems to start with then go from there up on the exhaust. Why is it that the 2.0l and 2.4l are different then the 2.2 I can understand the header because of the SAI but why the catback part?
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post #2 of 9 (permalink) Old 07-01-2009, 11:23 AM Thread Starter
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On top of the differences in listings, I saw the 2.2l catback systems are relatively cheap 250$ shipped but the 2.0 and 2.4 are 500$ and up.... obviously the manufacturer matters as well.
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post #3 of 9 (permalink) Old 07-01-2009, 11:27 AM
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they are not diff except some market to diff models as the pipe size can differ due to amnt of power


you can order any cobalt catback though


I would suggest a clear image auto setup, def the best craftsmanship and sound out there
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post #4 of 9 (permalink) Old 07-01-2009, 12:08 PM Thread Starter
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and as i understand it, keep the diameter to around 2 1/2 inches no more than 3 as far as I saw on the sticky. What is the stock exhaust diameter for the non 2.2 cobalts?
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post #5 of 9 (permalink) Old 07-01-2009, 12:24 PM
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um, idk what the stock is but 2.5 is prolly the biggest you should ever go unless you're going to do one sick turbo set up.
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post #6 of 9 (permalink) Old 07-01-2009, 12:27 PM
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I have 3", but i have a 2.5" downpipe and muffler to create "backpressure"

2.5" is big enough unless you want a deaper tone (like i did) or are going high in hp
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post #7 of 9 (permalink) Old 07-01-2009, 12:35 PM Thread Starter
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ok so I am right on then. Awesome.
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post #8 of 9 (permalink) Old 07-01-2009, 04:34 PM
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The only echausts that will not work for you are the exhausts for the SS/TC. The reason being that they use a 3 bolt flange on the DP/catback connection. 2.2, 2.4 & the 2.0/SC all use a 2 bolt flange.



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post #9 of 9 (permalink) Old 07-01-2009, 09:36 PM Thread Starter
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I think that should be added to the bolt on mods list as a spec...
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