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04-25-2005, 12:35 PM
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Hummer Expert
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Join Date: Mar 2004
Location: Houston, Texas
Posts: 917
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Ok, I'm ready to start upgrading my new H2.
I purchased Edlebrock headers, and new Cats and Xtreme flow exhaust www.xtremeflow.com.
I go down to my local exhaust shop and they tell me:
"Headers will burn up your cats"
"The cats you have are as good as they come"
"Any modification to the exhaust before the cats will void your warranty"
Is there any truth to these statements. Just want to get another opinion. |
04-25-2005, 12:35 PM
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Hummer Expert
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Join Date: Mar 2004
Location: Houston, Texas
Posts: 917
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Ok, I'm ready to start upgrading my new H2.
I purchased Edlebrock headers, and new Cats and Xtreme flow exhaust www.xtremeflow.com.
I go down to my local exhaust shop and they tell me:
"Headers will burn up your cats"
"The cats you have are as good as they come"
"Any modification to the exhaust before the cats will void your warranty"
Is there any truth to these statements. Just want to get another opinion. |
04-25-2005, 01:27 PM
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Banned
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Join Date: Jan 2003
Posts: 24,247
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Well, considering there are headers that the dealer installs and is approved by GM, I would get another opinion.
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04-25-2005, 01:41 PM
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Hummer Authority
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Join Date: Nov 2004
Location: Little Rock, Arkansas
Posts: 1,784
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I agree with PARAGON.
I put catback headers etc. and My dealer said no problem with warranty.
I would find a performance exhaust shop to talk to.
My dealer even said go on and get supercharger We will not let effect Your warranty or extended warranty.
TAZ
__________________
05 H2 SUV cus. paint, Magnuson SC 6/12lb boost, cowl hood scoop, 12" dash touchscreen, GM elec. fans, HPTuners.com tuning soft., Dynatech headers dual catback exhaust Jet Hot chrome front to back Flowmaster Super 40's, Diamo 8 Karat rims & 325X60-20" Toyo, 4 OEM Captain seats Katzkins leather, rear console computer inside running all AV/NAV etc., Infinity component system 3 amps Tsunami Caps, rear flip down 12" monitor, headrest monitors, overhead console boost, fuel pressure, & A/F ratio gauges
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04-25-2005, 08:31 PM
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Hummer Veteran
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Join Date: Mar 2005
Location: Sugarland Texas
Posts: 43
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The headers will not void the warrenty.We put them on all the time.
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04-25-2005, 11:00 PM
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Hummer Professional
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Join Date: Dec 2004
Location: 2 clicks north of Houston
Posts: 412
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That's all a load of crap. To void warranty, the mods must be done withing the long block, or a secondary power adder must be used. The cats you buy will be worlds better than the stockers, and will not get burned up by exhaust headers.
__________________
Had-94,96,98,99 Cobra Stang,99 Navigator,03 Expy, 05 H2
Have-08 Titan C/C,06 GCSRT-425FTLB & AWD, other junk..
Want-08 Viper, 06 M5 
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04-26-2005, 01:38 AM
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Hummer Guru
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Join Date: Jan 2004
Posts: 7,060
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[quote]Originally posted by drmiles:
Ok, I'm ready to start upgrading my new H2.
So what happened to the other truck... You know, the one that was all built up and had a great looking Gobi rack on it?
__________________
TAIL RATED!
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04-26-2005, 01:21 PM
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Hummer Expert
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Join Date: Mar 2004
Location: Houston, Texas
Posts: 917
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Well after the transmission went out, the dealer talked me into trading up for an 05. We moved everything, (Gobi rack, XTC lightbar, Winch, front and rear connections). Lift and tires went with old truck. Still deciding if I'm gonna lift the new one or just put 37's on it. Also have supercharger in box waiting to install... need some additional parts to change from 03 to 05.
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