Would a programmer on an i5 be worth the $?

[H322]

I have a buddy selling a Diablo Sport I-1000DCX in tune advanced programmer. It is unmarried and he is willing to sell it to me for a very reasonable price. My h3 has the i5 my question is would I see decent gains from a programmer? Would one even be worth the trouble I plan to order a aluminum rad here shortly also. Are these good mods for an i5 or should I just leave it as is. If I do install the programmer or there other things I will have to worry about or change? Thanks for the help in advance


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[Cyrus Avey]

I don't personally have one, but from what I have read people are generally happy with them. Don't expect a 100 HP increase but it should definitely be noticeable.

 

[Odimus]

depends...are you running stock air in-take or have the AirDoc mod? I have one on my Ford and use it mostly for towing, back up camera monitor, and clear any codes that might pop up...

 

[cbetts]

Are you sure the programmer will work with the five cylinder? I never found one that worked with the I5s, only V8s.

 

[alrock]

Following up on what cbetts said, googling that programmer doesn't list an application for any Hummer but an H1.

 

[4speedfunk]

I can't believe there is enough "un-tapped" horsepower built into the 3.5/3.7L to bother with a tuner. In fact, considering the electronic demons hiding everywhere inside the H3...it might even be like opening a Pandora's box of trouble codes, with little or not actual performance improvement. I had PCMofNC do some minor tweeking with mine but, I would never expect to see any huge improvements. It does seem to idle better, and has slightly more response right at tip-in...but it feels more like a timing adjustment, and not any sort of true horsepower gain. They firmed-up the shifts as well...stage 2 (head snapper).

In short...You can't polish a turd.

Just drive it. Change the oil. Throw some injector cleaner in once in awhile. And be glad it starts. Expecting any more than this from the 5-cyl. is living in complete denial.

 

[jakesz28]

I have used HP tuners to limit the amount of torque management, raise the idle a little, adjust shift points and firmness, correct the speedometer. But there is little to no real power to be gained.

Would I have bought HP tuners just for the thee H3? NO but since I have been known to play with a few cars and had it sure I made some tweaks.