GMPP Performance Exhaust

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Mar 12, 2009 | 08:01 PM

Mindrot

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From: Fredericksburg, VA

GMPP Performance Exhaust

Question. Is the performance exhaust from GM a bolt on application or is any welding needed? I want to know in advance before I start this small project.

Mar 12, 2009 | 08:07 PM

blackbolt89

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From: New Milford, NJ

i do not have the gmpp but i have corsa and i believe it's all the same. just uses 3 or so clamps over the joints. no welding needed.

Mar 12, 2009 | 08:10 PM

scott allen

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From: louisville k.y

Quote:

Originally Posted by Mindrot

Question. Is the performance exhaust from GM a bolt on application or is any welding needed? I want to know in advance before I start this small project.

I have the gmpp catback it is a direct bolt in,also its 4 sale.

Mar 12, 2009 | 08:12 PM

TurboTechRacing

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GMPP smallest part is only 2.25" you might be better to look into Magnaflow (about the same price, but it is a full 2.5" if you get the part number 16619)

Mar 12, 2009 | 08:16 PM

Mindrot

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From: Fredericksburg, VA

The performance exhaust from GMPP isnt 2.5" all around? That defeats the purpose of getting a "Performance" part if it still has a restriction like that. Correct me if im wrong

Mar 12, 2009 | 08:19 PM

FORCE-FED_06SS

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From: Milwaukee/Wisconsin

GMPP FTL! dont buy! actually if you like your warrenty get it, otherwise if you dont care and want to save money in the long run dont buy!

Mar 12, 2009 | 08:22 PM

Mindrot

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From: Fredericksburg, VA

Quote:

Originally Posted by FORCE-FED_06SS

GMPP FTL! dont buy! actually if you like your warrenty get it, otherwise if you dont care and want to save money in the long run dont buy!

Why do you say that? Just curious

Mar 12, 2009 | 08:29 PM

FORCE-FED_06SS

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From: Milwaukee/Wisconsin

It's personal opinion, but other aftermarket sources have way better products for the same if not a better price and better performance if thats what you are looking for.

Mar 12, 2009 | 08:30 PM

TurboTechRacing

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Quote:

Originally Posted by Mindrot

The performance exhaust from GMPP isnt 2.5" all around? That defeats the purpose of getting a "Performance" part if it still has a restriction like that. Correct me if im wrong

No it is 2.5" in SOME spots but not all. The smallest diameter in the GMPP exhaust is 2.25"

Magnaflow is 2.5" all the way!

Mar 12, 2009 | 08:35 PM

#10

scott allen

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From: louisville k.y

Quote:

Originally Posted by Mindrot

The performance exhaust from GMPP isnt 2.5" all around? That defeats the purpose of getting a "Performance" part if it still has a restriction like that. Correct me if im wrong

With the gmpp catback gm has dyno tested on cobalts and gained 12whp gm dyno proven and still keep your warrenty.

Mar 12, 2009 | 08:38 PM

#11

G5GT2007

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From: CT

Quote:

With the gmpp catback gm has dyno tested on cobalts and gained 12whp gm dyno proven and still keep your warrenty

and i no for a fact its true. i dynoed my G5 stock it did 153hp then with the gmpp i did 165hp

Mar 12, 2009 | 08:40 PM

#12

Mindrot

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From: Fredericksburg, VA

Quote:

Originally Posted by scott allen

With the gmpp catback gm has dyno tested on cobalts and gained 12whp gm dyno proven and still keep your warrenty.

I assume you are referring to the Drivetrain Warrenty?

Mar 12, 2009 | 08:40 PM

#13

scott allen

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From: louisville k.y

Yes.
Ill sell mine its got 1000 miles on it garage keep never driven in the rain.Ill take $ 380.00 and that includes the gm tip.

Mar 12, 2009 | 08:42 PM

#14

TurboTechRacing

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Quote:

Originally Posted by scott allen

Yes.

They can't void your powertrain warranty for putting on any brand exhaust...

Mar 12, 2009 | 08:45 PM

#15

scott allen

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From: louisville k.y

**** at some dealerships you can fart and they will void your warranty.

Mar 12, 2009 | 08:46 PM

#16

Mindrot

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From: Fredericksburg, VA

If I can get less restriction from different exhaust and keep that warrenty then ill stay clear from GMPP. I looked at the Hahn Racecraft 3" and it caught my eye. Should a non-sc/tc stick with 2.5"?

Mar 12, 2009 | 08:46 PM

#17

TurboTechRacing

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Quote:

Originally Posted by scott allen

**** at some dealerships you can fart and they will void your warranty.

Not legally

They can try to give you a line of BS, but they have no leg to stand on...

Mar 12, 2009 | 08:49 PM

#18

scott allen

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From: louisville k.y

You should not go with anythig bigger than a 2.5 inch with a none turbo or supercharger.

Mar 12, 2009 | 08:52 PM

#19

ss/pumkin

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From: Dallas TX

yea the gmpp is easy to install but to remove the old exhaust your gonna have to cut the pipe where it bends over the rear support. Ive loved mine since i got it a year ago.