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07-21-2008, 06:25 PM
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Hummer Veteran
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Join Date: Jul 2008
Location: Jersey Shore
Posts: 62
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PCM Device Advice
Hi,
My names Rich. New to the forum.
I came across an Ebay ad for a PCM device that claims to increase HP/save fuel by overriding the H3's computer. I immediately dismissed this as a 'sounds too good to be true...' item but then in reading through these forums I came across the PCM acronym a few times and now I wonder if the thing or anything like it actually works? I use a fuel additive now that gets me near 25 MPG highway (3 gallons = 74mi.) and if I can improve on that, I'd sure like to. Can some of you offer me advice on these devices and on any others that will increase my fuel savings, such as performance exhausts, air intakes, old ladies with tow chains on souped up scooters, whatever you think might do the job.
Thanks,
Rich in NJ
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07-22-2008, 12:38 AM
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Hummer Guru
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Join Date: Jul 2006
Location: Stouts Creek
Posts: 4,192
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Re: PCM Device Advice
If your getting 25 mpg wow...
There is alot of info on PCM for less on the colorado/canyon forum.
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07-22-2008, 11:39 PM
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Hummer Veteran
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Join Date: Dec 2007
Location: somewhere
Posts: 164
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Re: PCM Device Advice
rich . rich here. this guy is blowing sunshine up yer butt. if ya want to discuss this snake oil pm me and ill give ya my cell and we can discuss this bull . i deal with this all the time .......
just my .02 worth
rich
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18B................
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07-23-2008, 04:32 PM
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Hummer Veteran
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Join Date: Jul 2008
Location: Jersey Shore
Posts: 62
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Re: PCM Device Advice
The pcm for less that's what I was reading in the forums, but it appears to be a device that likely voids a warranty. The product I saw on Ebay is an add on device that seems to connect to something in the vehicles engine compartment and it says it can be easily removed and doesnt overwrite the computer permanently. Given the limited responses to the post I'll assume its garbage and stick with my 25 mpg giving fuel additive.
Thanks
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07-24-2008, 10:06 PM
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Hummer Veteran
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Join Date: Aug 2006
Posts: 26
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Re: PCM Device Advice
Quote:
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Originally Posted by jersey
The pcm for less that's what I was reading in the forums, but it appears to be a device that likely voids a warranty. The product I saw on Ebay is an add on device that seems to connect to something in the vehicles engine compartment and it says it can be easily removed and doesnt overwrite the computer permanently. Given the limited responses to the post I'll assume its garbage and stick with my 25 mpg giving fuel additive.
Thanks
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Are you hypermiling to get that mpg? Are you using Ethos?
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"I didn't mean to wreck him, I just wanted to rattle his cage." D.E. 1951-2001
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07-25-2008, 02:50 AM
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Hummer Guru
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Join Date: Dec 2005
Location: In a FREE U.S.A. where Marxism, Socialism & Communism is not allowed !
Posts: 5,485
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Re: PCM Device Advice
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07-25-2008, 02:50 PM
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Hummer Guru
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Join Date: Jan 2004
Posts: 7,060
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Re: PCM Device Advice
Quote:
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Originally Posted by RubHer Yellow Ducky
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I think he's being towed with the engine on. 
OR
his fuel additive is a super advanced flux capacitor.
..."when this baby hit's 88mph, your gonna see some serious s4it."
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