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12-04-2002, 02:14 PM
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Join Date: Dec 2002
Location: Berea, Ohio, USA
Posts: 4
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Wondering what aftermarket exhaust systems are available for the H2? Which one is considered the most popular and if you had one installed, are you satisied with it?
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12-04-2002, 02:14 PM
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Join Date: Dec 2002
Location: Berea, Ohio, USA
Posts: 4
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Wondering what aftermarket exhaust systems are available for the H2? Which one is considered the most popular and if you had one installed, are you satisied with it?
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12-04-2002, 03:48 PM
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Join Date: Nov 2002
Location: Simi Valley, CA
Posts: 37
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Waiting for Borla to finish their's. It looks great (stainless, no cutting/welding).
90% that I will use Air Force 1 intake.
Should make for make for some heavy breathing.
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12-04-2002, 04:48 PM
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Join Date: Dec 2002
Location: Louisburg, NC, US
Posts: 7
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I have a H2 Sport Exhaust System from SMA for sale if anyone is interested. [img]/infopop/emoticons/icon_biggrin.gif[/img] [img]/infopop/emoticons/icon_biggrin.gif[/img] [img]/infopop/emoticons/icon_biggrin.gif[/img]
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12-04-2002, 05:04 PM
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Join Date: Dec 2002
Location: San Diego, CA
Posts: 143
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Why are you selling the SMA Exhaust?
__________________
Regards,
David
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H2SUT.com
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Red metallic, Lux package, Poron backup sensors, throttle body by-pass, Independent dual DVDs, Volant air box, DRL mod, chrome hood handles and latch.
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12-04-2002, 05:24 PM
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Join Date: Dec 2002
Location: Louisburg, NC, US
Posts: 7
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Decided to go back to stock exhaust. Need the money for Christmas. Had a few unexpected problems (costs) around the house. Washing machine and heat pump died.
The exhaust only took about 30 minutes to install. It only has about 2000 miles on it. It is manufactured by B&B. Nice deep throaty sound.
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12-04-2002, 05:59 PM
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Join Date: Nov 2002
Location: Aruba
Posts: 349
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Is the exhaust-end of the SMA sport exhaust visible when standing behind the Hummer? The end of the stock exhaust isn't. Having to do off course with ground/water clearance.
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12-04-2002, 06:24 PM
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Join Date: Dec 2002
Location: Louisburg, NC, US
Posts: 7
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not the sma is not visible from the exterior of the h2. It ends at almost the same place as the stock.
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12-04-2002, 07:20 PM
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Join Date: Nov 2002
Location: Dallas, Texas
Posts: 63
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Check out www.breathlessperformance.com they have a few options there that may be of interest to you. |
12-04-2002, 07:23 PM
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Join Date: Dec 2002
Location: San Diego, CA
Posts: 143
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I'm interested. Please email me for pricing info.
nsxtc@yahoo.com
Thanks.
__________________
Regards,
David
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H2SUT.com
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Red metallic, Lux package, Poron backup sensors, throttle body by-pass, Independent dual DVDs, Volant air box, DRL mod, chrome hood handles and latch.
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12-04-2002, 09:33 PM
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Join Date: Dec 2002
Location: Louisburg, NC, US
Posts: 7
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Asking $700.00 + shipping
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12-05-2002, 05:26 AM
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Hummer Authority
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Join Date: Nov 2002
Location: Los Angeles, Calif
Posts: 1,283
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Here is what I found out: I went to my local exhaust performance shop looking to blow some coin on a new exhuast system. The owner of the shop told me that they had already played with the H2 exhaust and actually found that the stock exhaust remarkably offered a mere 1/4 pound of back-pressure...which is almost nothing!
While this guy makes his living selling and installing these systems, he looked me in the eyes and told me to save my money; Aside from a deeper and more throaty sound, there would likely be virtually NO IMPROVMENT in fuel efficiecy or horsepower on account of the stock system already being extremely efficient.
While some manufacturers make claims and say they can support them with test data, I remain skeptical. [img]/infopop/emoticons/icon_confused.gif[/img]
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12-05-2002, 11:30 AM
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Hummer Expert
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Join Date: Nov 2002
Location: North Texas
Posts: 523
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Steve,
Did this guy have any opinion on potential improvement with Intake kits???
Jim
Red H2 in Texas
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Jim
2003 H2 Metallic Red (now gone)
2008 H3 Graphite Lux
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12-05-2002, 06:43 PM
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Hummer Authority
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Join Date: Nov 2002
Location: Los Angeles, Calif
Posts: 1,283
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Sorry Jim....the owner of the shop was all about performance exhaust and did not offer any info on intake modification. I frankly think GM wouldn't choke down their intake such that it would seriously inhibit the ability of the engine to a degree that would compromise performance.
The intake is all about two things: filtering the air such that abrasive and damaging debris not be allowed into the intake AND reducing the noise coming from that end of the engine.
Believe it or not, you'll notice a 'horn' or extension hovering just over the fan...this plastic-extruded cavity (tied to the intake) is solely there for the purpose of noise-reduction.
As far as air filtration, I've been offroading and believe me...there's lots of dust and stuff that you really want to keep out of your engine. The filter box has a large filter. I suppose an aftermarket filter could offer improved flow, but you'd think that must mean a less discriminating filter...which ideally would mean less fine a media. I'd choose engine longevity over a few horsepower any day. [img]/infopop/emoticons/icon_smile.gif[/img]
Many of these aftermarket kits also use "cool air" which should also help for several reasons. Reasons that in theory make sense...but in practice...who knows. [img]/infopop/emoticons/icon_confused.gif[/img] [img]/infopop/emoticons/icon_smile.gif[/img]
It's a toss-up. I put my faith in the engineers who manufacture the beast. I realize it's fun to modify and play with customizing our new toys, but I remain entirely skeptical...probably cause my racquetball-buddy used to own a performance shop and he told me most the bolt-on hop-ups are BS. [img]/infopop/emoticons/icon_redface.gif[/img]
The H2 isn't about being fast or fuel-efficient....why mess with the dynamic. By the way...if you retract your side-view mirrors inwards when on the freeway, you'll pick up 35 more horsepower AND increase your mileage 4 mpg!
DON'T BELIEVE THE HYPE [img]/infopop/emoticons/icon_cool.gif[/img]
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12-05-2002, 07:53 PM
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Join Date: Nov 2002
Location: Simi Valley, CA
Posts: 37
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Your right Steve, DO NOT BELIEVE EVERYTHING YOU HEAR!!! I retract my mirrors and I only get 28 additional HP and 3.4 MPG.
[img]/infopop/emoticons/icon_smile.gif[/img]
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12-07-2002, 02:49 AM
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Hummer Authority
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Join Date: Nov 2002
Location: Los Angeles, Calif
Posts: 1,283
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you probably forgot to lower the two antennas on top of the roof! that'll get ya every time. [img]/infopop/emoticons/icon_wink.gif[/img]
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12-08-2002, 06:20 PM
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Join Date: Nov 2002
Location: Aruba
Posts: 349
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But shouldn't you have at least the driver's side mirror extended while driving, according to regulations? Just nitpicking, allright.
Hmmm, suggestion to manufacturer: Have separate swithes to fold in/out each side mirror.
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12-09-2002, 02:30 AM
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Hummer Authority
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Join Date: Nov 2002
Location: Los Angeles, Calif
Posts: 1,283
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JCJ.....please tell me you are aware that we're joking around?
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12-09-2002, 02:52 AM
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Join Date: Nov 2002
Location: Land of Enchantment
Posts: 230
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Steve R - You were joking? No wonder the dealer seemed a bit perplexed as he took my money after I insisted on the retractable antenna option....
too much fun tonight...
JJ
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12-09-2002, 04:32 AM
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Hummer Authority
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Join Date: Nov 2002
Location: Los Angeles, Calif
Posts: 1,283
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[img]/infopop/emoticons/icon_biggrin.gif[/img]
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