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03-23-2007, 01:40 PM
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Hummer Expert
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Join Date: May 2006
Location: Johnstown, PA.
Posts: 553
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Re: GM Performance Exhaust System
So what performance do such systems add? 
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03-23-2007, 05:10 PM
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Re: GM Performance Exhaust System
Very little added, probably 10hp or so. Looks cool with the dual outlets (stainless tips bling). Tips could drag on departure in heavy wheeling, but you could have a muffler shop mod tips to make them removable. Corsa sounds good, kinda of like BMW straight six.
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03-23-2007, 11:02 PM
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Hummer Authority
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Join Date: Dec 2005
Location: Nonpiker
Posts: 1,478
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Re: GM Performance Exhaust System
So what performance do such systems add?
I have never really noticed a performance change after upgrading the exhaust on any of my previouse cars. However, I really noticed an increase in power at take-off and on the highway on the H3. I was very surprised and a I recommend the upgrade! Sadly that is gone now due to 35's, I felt a big change after going bigger. I am wondering if I have the dreaded head problem, becuase it was a bigger change than I expected.
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*Rollin with the Banned and the Damned*
until I move, buy an H2 and get too busy to roll
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03-24-2007, 02:23 AM
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Hummer Authority
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Join Date: Nov 2005
Location: Mississippi
Posts: 1,776
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Re: GM Performance Exhaust System
Quote:
Originally Posted by DemoDaddy79
So what performance do such systems add?
I have never really noticed a performance change after upgrading the exhaust on any of my previouse cars. However, I really noticed an increase in power at take-off and on the highway on the H3. I was very surprised and a I recommend the upgrade! Sadly that is gone now due to 35's, I felt a big change after going bigger. I am wondering if I have the dreaded head problem, becuase it was a bigger change than I expected.
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Even with my 35's, I still have more power than before the dual exhaust, but then I have that other thing too
You may want to have them look at the heads, because I still have pretty much as much power with the 35's as I had with the 33 Toyo's.
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03-24-2007, 04:06 AM
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Re: GM Performance Exhaust System
I installed the new, Dual Wall Tips this evening.
Wow, what a difference in look. The single wall tips just don't look as nice.
As for power? Hell I don't know. If there is a differnce in HP, I can't feel it.
But the dual tail pipes in stainless really do look nice.
I think that the departure angle will be shortened a bit, but since I haven't really done serious off roading, it doesn't mean much to me.
If I need to, I can always remove the tips. The pipes hang pretty close to where the original was, and the performance muffler is smaller.
I'll post some pics up in a day or two.
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03-25-2007, 06:27 AM
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Re: GM Performance Exhaust System
Quote:
Originally Posted by Lex_Ordo
I installed the new, Dual Wall Tips this evening.
Wow, what a difference in look. The single wall tips just don't look as nice.
As for power? Hell I don't know. If there is a differnce in HP, I can't feel it.
But the dual tail pipes in stainless really do look nice.
I think that the departure angle will be shortened a bit, but since I haven't really done serious off roading, it doesn't mean much to me.
If I need to, I can always remove the tips. The pipes hang pretty close to where the original was, and the performance muffler is smaller.
I'll post some pics up in a day or two.
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Cool. Yours (GM Performance version) already has the removable tips.
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