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

ARK vs HAHN vs ZZP exhaust system???

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Old 08-30-2009, 09:39 PM
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ARK vs HAHN vs ZZP exhaust system???

which one is the best for my stock 2.4L cobalt sport(not SS)???
Old 08-30-2009, 11:22 PM
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truthfully its all in looks and sound. take a look at the thread in my sig for sound clips. If you are staying NA then the Hahn is to large anything over 2.5" is going to make you loss HP on a NA set up.
Old 08-30-2009, 11:35 PM
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The Hahn ID adapter will hook up to the stock downpipe and only be as large as the downpipe.
Old 08-31-2009, 08:08 PM
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Originally Posted by Dunkinuts
truthfully its all in looks and sound. take a look at the thread in my sig for sound clips. If you are staying NA then the Hahn is to large anything over 2.5" is going to make you loss HP on a NA set up.
where is ur sound thread??
Old 08-31-2009, 09:00 PM
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click the flashing thing in my signature. its the performance thread at the top of the 2.4L section
Old 08-31-2009, 09:03 PM
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Hahn.
Old 08-31-2009, 09:35 PM
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Either magnaflow (aka the exhaust ZZP sells) or any of the Ark exhausts are fine.

The Hahn will see a gain up in the high RPM's but you'll lose hp down low where you want it due to the fact that its a 3" diameter and considered to be to large for a N/A application on the 2.4L unless you are running a fully built motor.
Old 08-31-2009, 09:54 PM
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x2... zzp is pretty good set up
Old 08-31-2009, 11:21 PM
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Originally Posted by riko540
Either magnaflow (aka the exhaust ZZP sells) or any of the Ark exhausts are fine.

The Hahn will see a gain up in the high RPM's but you'll lose hp down low where you want it due to the fact that its a 3" diameter and considered to be to large for a N/A application on the 2.4L unless you are running a fully built motor.
even if its a fully built motor...its not needed until around 300bhp.
Old 08-31-2009, 11:28 PM
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Originally Posted by riko540
Either magnaflow (aka the exhaust ZZP sells) or any of the Ark exhausts are fine.

The Hahn will see a gain up in the high RPM's but you'll lose hp down low where you want it due to the fact that its a 3" diameter and considered to be to large for a N/A application on the 2.4L unless you are running a fully built motor.
even fully built motors would not use the full 3". That extra half in of piping is a lot, to give you an idea 2.5 times 7 is 17.5; 3 times 7 is 21; 21-17.5=3.5; so in theroy you have to fill an extra 3.5' of piping. and that is just in tubing not counting mufflers etc. Now nitrous and boost adds more O2 which inturn makes more exhaust gases. But a 75 kit will really only need a 2.75" and a good amount of boost will be needed to take full advantage of the 3".
Old 09-02-2009, 08:42 PM
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Originally Posted by riko540
Either magnaflow (aka the exhaust ZZP sells) or any of the Ark exhausts are fine.

The Hahn will see a gain up in the high RPM's but you'll lose hp down low where you want it due to the fact that its a 3" diameter and considered to be to large for a N/A application on the 2.4L unless you are running a fully built motor.
i was thinking about the 2.5" ehaust which i heard was better.... but what is the 2.5" gonna do the 3" wont??
Old 09-24-2009, 06:29 AM
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the 2.5 will keep some pressure in the exhuast system, and will reduce backfire
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