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

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Old 04-05-2010, 11:07 AM   #1
Moonlight
 
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Best upgrade. Headers, CAI, exhaust?

so im looking for some upgrades. which do you think would give me the best performance gain? cuz I'm kinda short of cash so I will probably just get 1 or 2. And what brand do you think I should go for? GMPP?

btw my l99 is slowing too....also looking for a solution with my dealer

thx in advance and happy easter!!!
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Old 04-05-2010, 12:03 PM   #2
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Originally Posted by Moonlight View Post
so im looking for some upgrades. which do you think would give me the best performance gain? cuz I'm kinda short of cash so I will probably just get 1 or 2. And what brand do you think I should go for? GMPP?

btw my l99 is slowing too....also looking for a solution with my dealer

thx in advance and happy easter!!!

Check the fuse pull mod http://www.camaro5.com/forums/showthread.php?t=38964. It helps out L99s that are running on the low octane tune map. It could help out your sluggish performance.

Best mod is long tube headers. Search around, they're a bunch of different choices. Guys usually pick up 20-30 rwhp from long tube headers. The most popular LT headers are ARH and Kooks, but there are others like Pacesetter that are less expensive.

If you're really short on cash you might want to go with ADM's race pipe. Guys are seeing pretty good results for cheap dollars.
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Old 04-05-2010, 12:55 PM   #3
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kooks 1 7/8 long tubes cold air intake
cheap mod to get rid of those huge mufflers is a muffler delete
also a tune
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Old 04-05-2010, 01:06 PM   #4
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lots of brands to choose from a quick will answer all your questions

for headers the most popular are Kooks and American Racing

for intakes there are so many to choose from, just find one in your price range. i have a Late Model Racecraft intake for sale here: http://www.camaro5.com/forums/showthread.php?t=74627

for exhaust there are also several to choose from but the 3 most popular would be Corsa, Borla, and Magnaflow
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Old 04-05-2010, 01:11 PM   #5
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Originally Posted by SGOS252382 View Post
Check the fuse pull mod http://www.camaro5.com/forums/showthread.php?t=38964. It helps out L99s that are running on the low octane tune map. It could help out your sluggish performance.

Best mod is long tube headers. Search around, they're a bunch of different choices. Guys usually pick up 20-30 rwhp from long tube headers. The most popular LT headers are ARH and Kooks, but there are others like Pacesetter that are less expensive.

If you're really short on cash you might want to go with ADM's race pipe. Guys are seeing pretty good results for cheap dollars.

thx for the info.

My L99 was not that early built so I don't know if the fuse pull still applies.

What do you think of GMPP exhaust, headers and AI?
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Old 04-05-2010, 01:13 PM   #6
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kooks 1 7/8 long tubes cold air intake
cheap mod to get rid of those huge mufflers is a muffler delete
also a tune
thx for the info

I wonder whats the difference between 7/8 and 3/4. It says that the 7/8 is for 550 hp+ systems which mine is not even close to that.

and perhaps Diablo Predator or Trinity for tune? (will that get rid of AFM?)
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Old 04-05-2010, 01:36 PM   #7
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thx for the info

I wonder whats the difference between 7/8 and 3/4. It says that the 7/8 is for 550 hp+ systems which mine is not even close to that.

and perhaps Diablo Predator or Trinity for tune? (will that get rid of AFM?)
you can go either size on the primaries. if you get a tune and an intake, the 7/8 will yield a higher hp rating. American Racing and Kooks both sell both sizes (American Racing are cheaper if you just buy the headers and cats without the x-pipe) www.lmperformance.com

for a tune, if you cannot find a reputable dyno tuner within driving distance to you, the diablosport programmers can disable AFM, but you will need to request from them a custom tune to disable the O2 codes that the headers cause
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Old 04-05-2010, 08:40 PM   #8
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The fuse pull still applies to cars that are built today.
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Old 04-05-2010, 08:58 PM   #9
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Do all three I have around 1800$ in mine and thats for all 3 (just added magnaflow mufflers no axle back, cat back) and a tune.
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Old 04-05-2010, 09:09 PM   #10
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thx for the info.

My L99 was not that early built so I don't know if the fuse pull still applies.

What do you think of GMPP exhaust, headers and AI?
IMO stay away from the GMPP items.

The GMPP headers are shorties (not long tubes) and cost more then a good set of long tubes do.

The GMPP axle back costs twice as much as a good aftermarket axle back.

And the GMPP intake has been scrapped due to putting out no gains and there is no telling when it will come out or how much it will be.
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Old 04-06-2010, 10:04 AM   #11
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Checkout the TSP cold air & header/exhaust system. Its a complete package from the header all the way to the tips & is priced at lower than most companies headers & x pipe only! Add the TSP cold air & you have a proven big hp package at reasonable pricing.

Here's some results examples I found:
http://www.ls1tech.com/forums/2010-c...speed-inc.html

Pics:


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Old 04-06-2010, 01:21 PM   #12
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Do headers Void Warranty?

An intake CAI doesn't effect computor and adds about 15hp.
An axelback which is cheap can add 10hp.
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Old 04-06-2010, 01:42 PM   #13
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Exhaust wise, i went with the Magnaflow cat back. Part number 16580. All i can say is i love it!! The car sounds amazing and i love the big tips in the back. I got it through JDP motorsports. They have great prices. The best i could find anyway. I am very happy. As far as intake i went with ADM race intake. Its being delivered today. I got that through Apex motorsports. Should be getting it intalled on Thursday. I hope you find what your looking for. : ) Im not sure if header will void warrenty.. I was wondering the same..
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Old 04-06-2010, 01:53 PM   #14
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Do headers Void Warranty?

An intake CAI doesn't effect computor and adds about 15hp.
An axelback which is cheap can add 10hp.
They will void your exhaust warranty. Some dealers may try to void your power train warranty but it shouldn't.

An intake DOES effect your MAF and your computer. What parts of the car do you think adjusts the fuel trims and tells the injectors to increase fuel flow to compensate for the increased air flow?

An axleback does NOT add hp nor tq. It is strictly for sound only. A catback can increase your hp by 5-10 but an axleback will not.
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