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Go Back   Hummer Forums by Elcova > Hummer H3 Discussion Forums > General H3 Discussion

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  #1  
Old 04-12-2007, 09:09 PM
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HoosierH3 HoosierH3 is offline
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Question JET or PCM for less???? Need direction.

Hey all. New member here. Been lurking in the shadows for a couple days. A lot of good info and people on here. Sorry If I'm to lengthy.

I'm wanting a pcm mod, but not sure If I should purchase a JET Chip or do the PCM for Less option. I've read the threads on here for PCM and it looks like they are creating what I'm looking for, but the idea of a JET module that I can remove and sell in a couple years to get some money back is promising too. My 06 H3 is leased and will most likely get turned back in at the end.

My major concern with PCM for less is that my H3 is dealer serviced almost monthly through my lease (oil changes and tire rotations). I hate to mess with reprogramming if the dealer reflashes for what ever reason. (They've updated the stock program a few times allready without my prior knowledge) (They have the attitude that all the performance issues we are having are all in my head and that my H3 is performing perfectly...BS) It would be much easier for me to just remove the JET prior to service and plug it back in when they're done.

On the other hand, I'm looking for a bit better mileage(avg 13.5 now), firmer shifts, corrected odometer(increased tire size), smoother idle, quicker throttle response, more low end, blah blah blah. I've heard no real feedback on JET as to wether JET will accomplish all this or just give you a bit better feel. I've also heard that JET will help, but may actually lower your mpg.

I've totally confused myself. What say you????
Anybody have a JET module on their H3 or JET experience? Can anybody help me?
Much appreciated.

JET or PCMforless????

HoosierH3
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Old 04-12-2007, 10:06 PM
HummBebe HummBebe is offline
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Default Re: JET or PCM for less???? Need direction.

I checked JET's web site, I see nothing for the H3. Can you post the link? Please?
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Old 04-12-2007, 11:15 PM
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Default Re: JET or PCM for less???? Need direction.

The JET website is not up to date. It only reflects a spacer for H3.

I spoke with JET customer service today after talking with one of JET's distributers. The distributer is selling the same part number as they sell for the I5 3.5 Colorado/Canyon per JET's instruction. Same exact part number (JET20305) stage 1.

Per JET customer service..they are using the same exact part number for Hummer H3 as earlier Colorado. I confirmed this today with JET. According to JET tech service, "the H3 factory programming is nearly identical to 3.5 Colorados. Part number 20305 works on both with the same results." Wether this is true or false, I do not know, but this is JET's claim.

After reading many threads here pertaining to PCM for less, it does sound that both vehicle are set up similar from the factory, but not identical. Close enough though, that JET's module works in both vehicles.

JET tech service did tell me though that their module only adjusts for fuel/air ratio and timing. No mention or consideration for shift patterns, rough idle, or odometer recalibration obviously.
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Old 04-12-2007, 11:26 PM
HummBebe HummBebe is offline
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Default Re: JET or PCM for less???? Need direction.

I think it's all a croc.

I'm so sick of this subject.

Could someone just come out with a "real" tune already?

When someone messes/programs a PCM, BCM etc, that isn't an expert on the vehicle, then I wouldn't trust them, or their "close enough" attitude.

"Close but no cigar" is more appropriate. off
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Old 04-13-2007, 10:12 AM
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Default Re: JET or PCM for less???? Need direction.

Hummbebe you seemed stressed. MAybe some dancing bananas will help you relax.
ANd all the modes done to your ride have been crash worthyness tested by whom????


HoosierH3 asks a valid question. Don't know if you'll get an answer because I haven't heard of anyone trying JET's system. You may be the first. I went with the PCMforless option and have been happy with it. An increase in milage by 1 to 2 mpg. Depending on how I drive. It shifts better and that anoying lag when you start to let off the gas and have to hammer it again is gone.
In short I'm happy with what PCMforless did.
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Last edited by deserth3 : 04-13-2007 at 10:24 AM.
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Old 04-13-2007, 05:33 PM
HummBebe HummBebe is offline
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Default Re: JET or PCM for less???? Need direction.

Quote:
Originally Posted by deserth3
Hummbebe you seemed stressed. MAybe some dancing bananas will help you relax.
ANd all the modes done to your ride have been crash worthyness tested by whom????


HoosierH3 asks a valid question. Don't know if you'll get an answer because I haven't heard of anyone trying JET's system. You may be the first. I went with the PCMforless option and have been happy with it. An increase in milage by 1 to 2 mpg. Depending on how I drive. It shifts better and that anoying lag when you start to let off the gas and have to hammer it again is gone.
In short I'm happy with what PCMforless did.

Not stressed

My mods are more like a battering ram, so crash test is not necessary. In addition, H2O Hummers has been producing this type of equipment long before Hummers even existed, (mostly on HD Fords and Chevy trucks).

My issue with these types of programs are this:

They have not been dyno tested. Essentially it is a computer alteration that is purely "edumacated" guesswork. While there are improvements, I'll admit it, they are not optimal, because there is no four wheel dyno test to back it up.

I'll wait until there is some actual dyno testing before I use this type of upgrade.

A dyno on a 2 WD Colorado does not work for me.
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