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

2.4L downpipe

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Old 04-28-2008, 07:47 PM
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2.4L downpipe
I have currently the GMPP header & Touring Exhaust system, GMPP cold air intake. Just wondering what size downpipe I need for 2.4L cobalt 07'. If someone can provide me with names and brands.


Thanks.
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Old 04-28-2008, 07:48 PM
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i like the Cobalt Addiction XTC pipe, it' comes in 2.5 or 3 inch, either with or without cat. honestly, a 2.5 is enough, unless you're going heavy.
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Old 04-28-2008, 07:51 PM
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Run a cat, running with out one is only like one more WHP. And these cars sould like ass with out one.
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Old 04-28-2008, 07:59 PM
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2.5 is the good size for your 2.4...
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Old 04-28-2008, 07:59 PM
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2.5" will fit my exhaust system?
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Old 04-28-2008, 07:59 PM
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Originally Posted by afterlife04
2.5" will fit my exhaust system?
yuppers.
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Old 04-28-2008, 09:22 PM
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does it make a difference from stock?? sound? WHP?

also whats the stock size dp?

bump..
Last edited by afterlife04; 04-28-2008 at 09:22 PM. Reason: Automerged Doublepost
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Old 04-28-2008, 11:26 PM
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Originally Posted by afterlife04
does it make a difference from stock?? sound? WHP?

also whats the stock size dp?

bump..
it should make quite a bit difference since our stock cats are really restrictive
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