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What is the main difference between the sedan and coupe exhausts? I did a search and all I found was rallyered2k1civic trying to sell and exhaust and a debate about catbacks and custom piping... Is there a way to jury rig a coupe exhaust onto a sedan?

 
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hmm I guess everyone is as baffled as I...

 
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Hmm . . . that's funny, I wasn't aware that there was a difference. Someone care to enlighten me?

 
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I don't think there is a difference.

 
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Well I see exhausts that say "coupe only" and GReddy makes an exhaust for 4dr and 2dr so?

 
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hmm, you've got a point there. My guess is the difference in trunk length? I think if the exhaust is designed to fit both coupe and sedan, the tip will stick out a little farther on the sedan because the trunk is shorter? That's my theory at least.

 
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That makes sense. There are differences in the underbody? Possibly, as far as length and whatnot. But functionally speaking, I don't think so. Probably just different mounting points.

 
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i know that the exhaust are different if the trim level is different
ex) EX and LX...the EX has vtec and LX doesnt so use different exhaust