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Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 04-29-2010, 09:16 PM   #1
KarKrazy
 
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Ehaust question...

I almost hate to ask. i know there has been 1001 treads on exhaust, but has anyone installed the GMPP exhaust on a L99/auto? Also the dealer stated there are 2 styles, a off-road? Thanks for any input.
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Old 04-29-2010, 10:09 PM   #2
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Check this site out, I think I want the S Type.

Sorry but I know nothing of the GMPP exhaust.
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Old 04-29-2010, 10:19 PM   #3
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that atak system sounds mean.
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Old 04-29-2010, 10:32 PM   #4
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Check the exhaust section. There's an entire forum dedicated to this sort of thing: http://www.camaro5.com/forums/forumdisplay.php?f=11
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Old 04-30-2010, 09:24 AM   #5
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Thanks, I'll check out that forum. I was just looking for someone who used the General Motors Performance Part exhaust on their auto and had any advice. I've listened to most sound clips, but an exhaust systen sounds little different on ever V8, similar but different.
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Old 04-30-2010, 10:00 AM   #6
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Quote:
Originally Posted by KarKrazy View Post
I almost hate to ask. i know there has been 1001 treads on exhaust, but has anyone installed the GMPP exhaust on a L99/auto? Also the dealer stated there are 2 styles, a off-road? Thanks for any input.
i did!
and friggin' love it... and the note only gets better as the miles pile up and the tone "matures". i got the GMPP 'cause i keep my cars full-GM, and i got a sick deal thru my dealer/pal.
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Old 04-30-2010, 11:00 AM   #7
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I have Edlebrock shorty headers and x-pipe.......... Can't go wrong there.
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Old 04-30-2010, 11:07 AM   #8
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I have Edlebrock shorty headers and x-pipe.......... Can't go wrong there.
niiiiiiiiiiice. would love to hear it!...
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Old 04-30-2010, 02:33 PM   #9
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If you want a GMPP exhaust,I have one with only 123 miles on it for $500.
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Old 04-30-2010, 06:38 PM   #10
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Borla does have a great sound. The car in the video is a manual trans though, their cat back systems have been known to cause drone and bad sound with L99's.
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Old 04-30-2010, 10:10 PM   #11
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SLP loudmouth 1. sounds really good.
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Old 04-30-2010, 10:17 PM   #12
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I had a BMRP Stainless Cat-Back Exhaust installed by the dealer. Has a great sound at idle and is noticable while at a constant speed. It'll definately turn heads when you put you foot to the floor, of course everyone wants that.
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Old 05-01-2010, 12:25 AM   #13
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Scratch that last one,.... it's an MBRP Exhaust. here's the link for the site,..... http://www.mbrp.com/
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Old 05-01-2010, 06:37 AM   #14
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I was going through the same situation as you. I have read every post on here involving GMPP exhaust and couldn't decide between the standard and off road. After reading enough posts about the AFM kicking in and sounding funky, I was worried that the louder off road would just make this more noticable and annoying, so I ordered the standard GMPP. You can always make some more mods to get louder but trying to make it quieter doesn't work. I also use this as my daily driver and make a 3 hour drive up north quite a bit, I just want a little growl to it without waking up the neighbors when I go to work at 5:30am and not have to listen to the AFM going on and off while driving north. I'll know how it sounds in a week or so!
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Old 05-01-2010, 06:52 AM   #15
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Also, Borla makes these for GM. The GMPP off road is the louder similiar (or same as) to the Borla S type. The performance GMPP is similiar to the Borla Touring series. This will give you some other sound clips to listen to.
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Old 05-01-2010, 11:12 AM   #16
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Anyone know if the borla is quieter than the flowmaster? I'm from down south so I'm not too worried about the longevity of the flowmaster system so i'm going based on price, general sound, and drone. obviously the flowmaster is much cheaper but i can't really get a gauge on how it compares to the s-type as far as drone and sound. the youtube clips don't really do me justice in the comparison.
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Old 05-09-2010, 07:56 AM   #17
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Just had the GMPP Performance installed yesterday.... not the "off road". So far it is just what I was looking for, more of a deep, bass rumble idle, more sound on light throttle take-offs, and roars even better on full throttle, this is how it should have sounded from the factory. It does drone some when the AFM kicks on cruising at 40-45, much more noticable than stock (which is probably why GM has them so quiet from the factory) but nothing a radio volume of 14 can't help (sure would be nice if GM would let us tune this AFM off, or at least switch on/off, highway isn't as bad). I imagine the "off-road" with the AFM would be even more drone to the point of very annoying. I also took it on the highway where I was worried about the AFM drone because we do a lot of 3 hour drives up north, so far at 71-75 mph it is not nearly as noticable as the 40-45 mph AFM drone! Haven't driven it much but I will report back if my opinions change.
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Old 05-09-2010, 08:16 AM   #18
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Quote:
Originally Posted by KarKrazy View Post
I almost hate to ask. i know there has been 1001 treads on exhaust, but has anyone installed the GMPP exhaust on a L99/auto? Also the dealer stated there are 2 styles, a off-road? Thanks for any input.
I've had the GMPP for 10.5K miles now and am pleased with it. I agree that the sound "matures" with age and I especially love the tips. Installation can be tricky though....don't cut off quite as much as the directions say or the tips wont stick out far enough and you'll start melting plastic and wont be able to see the bowties on the tips. No regrets here.
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