how much more performance?

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Old 10-15-2007, 12:16 AM
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how much more performance?

i got aem cai and xs headers on my cls. i wanted to know by adding catback exhaust will i actually feel the diference when i add it. by the way where can i get a cheap catback exhaust?
Old 10-15-2007, 12:42 AM
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i believe type S exhaust is already free flowing but you get more sound and maybe a few extra ponies from aftermarket. but just a few
Old 10-15-2007, 07:26 AM
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No. Catbacks only add 2-4hp, so you won't feel the difference. Most people add exhaust for the sound not for the performance.
Old 10-15-2007, 07:53 AM
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Originally Posted by GreenMonster
No. Catbacks only add 2-4hp, so you won't feel the difference. Most people add exhaust for the sound not for the performance.
I couldn't have said it better myself. I do love the way my comptech's sound though
Old 10-15-2007, 09:25 AM
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Yeah not much of a difference. I add the CT's for the sound.
Old 10-15-2007, 10:20 AM
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I added Magnaflow's for the sound, and was very worth it. The XS headers in combination with the mufflers sounds absolutely perfect. It almost sounds like the G35 stock exhaust note on steroids, lol.
Old 10-15-2007, 10:37 AM
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i did the rt cat instead of the exhuast. the car revs up faster and with the ct icebox and headers, the sound is more agressive than stock(very g35ish).
Old 10-15-2007, 10:38 AM
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Want more performance? Buy a Comptech Supercharger.

You want big HP, it's going to cost you big bucks.
Old 10-15-2007, 03:24 PM
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im not spending $4,000 for just 50 hp. ill probably buy the pulley set.
Old 10-15-2007, 03:28 PM
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how much more performance with the crank pulley?
Old 10-15-2007, 04:32 PM
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buy ThinJim's turbo kit for 400+whp on pump gas
Old 10-15-2007, 06:10 PM
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Just change the resonator you will get a lil sound change from that also along with headers and will be cheaper than changing the exhaust
Old 10-16-2007, 12:27 AM
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A full custom exhaust doesn't sound anything like a G35.

Delete the mufflers with straight pipes and have full exhaust and you'll have nothing but loudness. So loud your neighbors will hate you forever.
Old 10-16-2007, 03:23 AM
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does header increase loudness?
Old 10-16-2007, 08:55 AM
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Sorta of. It changes the tone. It may sound louder at times, but the same at others.
Old 10-16-2007, 10:30 AM
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Originally Posted by fuzzy02CLS
Sorta of. It changes the tone. It may sound louder at times, but the same at others.
slightly louder and tone is def. different.
Old 10-16-2007, 10:41 AM
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other than sc or turbo i wish i could get more hp out of my car. i just got cai and headers, echaust is next.
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