Hypertech III question

[GMCJunker]

I was wondering if you have the hypertech installed can you run regular gas on a 97 350?

[Joe]

you can use the HPP3 to tune for 87/89 or 93 octane.
I ran that unit on my 2000 GMC 5.3l for a few years. I noticed zero difference in the 'seat of the pants' between the three tunes.

For the same money, you can get a tuned PCM that gives a much greater range of updates and will give you a much better response.

[GMCJunker]

well its showing on the hypertech webpage to run premium fuel...

[Joe]

well its showing on the hypertech webpage to run premium fuel...
Only if you PROGRAM it to run on premium fuel.

[speedjunkie]

On the older hpp3s you can't program for fuel. So just 93, but I think they recomend 91 realy.

[Aloicious]

On the older hpp3s you can't program for fuel. So just 93, but I think they recomend 91 realy.

yup, the '96-'97's aren't able to tune for fuel ratings, when I had mine I always ran 91 and never had problems. although if you're spending the money, spend less and get a custom tune that will give you more. I'm working on getting one from Wheatley right now.

[GMCJunker]

hmm, well this is where im getting the info http://www.hypertech.com/gmfeaturechart.html
just wondering if anyone with a 96-98 has had or has a programmer and if it would let you use dual fuel.

[GMCJunker]

so what would happen if I run regular fuel with the programmer?

[Joe]

On the older hpp3s you can't program for fuel. So just 93, but I think they recomend 91 realy.
If you can't adjust for fuel why do you run 93?
Does it program for 93 octane only? :think:

[Aloicious]

hmm, well this is where im getting the info http://www.hypertech.com/gmfeaturechart.html
just wondering if anyone with a 96-98 has had or has a programmer and if it would let you use dual fuel.

I had a '96-'97 one, and you could not program the fuel setting at all, it automatically programmed it for 91 octane. Th eolder black box PCM's can only be programmed for a single octane tune as far as I'm aware, from any tuner, whether its hypertech or not. the duel fuel tunings came on the newer pcm's.

I've heard of people getting some ping from running 87 with the PP 3, I've also heard of people having no problems running 87 with it. so I don't know what would happen to you specifically.

If you want to run 87, I would highly recommend getting a custom 87 tune from someone like wheatley, nelson, fastchip, waitforme, etc. with them you'll be able to get more performance, be able to run 87 without an issue, and set up the tune however you want and in ways the hypertech won't touch, such as removing torque management, as well as other things. you'll be much happier with it, and they cost quite a bit less than the retail hypertech.

[Aloicious]

hmm, well this is where im getting the info http://www.hypertech.com/gmfeaturechart.html
just wondering if anyone with a 96-98 has had or has a programmer and if it would let you use dual fuel.

I just saw this chart and for the most part, it is accurate, if you scroll down to the truck/SUV section, and look at the 1996-1998 area the fuel settings state 'premium' which means the tune is set up for 91 octane only, as these older pcm's were not made to take the duel fuel tunings. I had the #370202 one. and the chart looks correct except for the one I had did not read or clear DTC's. the chart says they do, but the 370202 I know does not. perhaps that is a feature on the brand new ones or something.

honestly though, you'll be happier with a custom tume. here are some sites for some of them:
http://www.gowheatley.com
http://www.nelsonperformance.com/
http://www.fastchip.com/
http://www.wait4meperformance.com/
http://www.pcmforless.com/

and there are more out there as well.

[GMCJunker]

well im buying this one for $150 and I dint realize I had to use 91. and i dont have enough done right now where I would want to do a custom tune. that would come after i did more to my truck.

[Joe]

well im buying this one for $150 and I dint realize I had to use 91. and i dont have enough done right now where I would want to do a custom tune. that would come after i did more to my truck.
I have a custom tuned PCM set to 87 octane.

[GMCJunker]

I have a custom tuned PCM set to 87 octane.
how mucho?

[Aloicious]

well im buying this one for $150 and I dint realize I had to use 91. and i dont have enough done right now where I would want to do a custom tune. that would come after i did more to my truck.

you really don't need to have 'stuff done' in order to get a custom tune. even on a stock truck, you'll see much more benefits from a custom tune than a handheld. and if you go with waitforme tune, theirs is $75 I believe, and $150 if you keep your stock pcm (either way it comes with free updates for life I believe).

however, if you decide to go with hypertech, $150 isn't too bad, but yes 91 octane is all it is made for, I got mine for $130 and that was a fair amount. it's nice that you can make tire size changes and what not in a matter of minutes, but don't expect much out of it performance wise.

Edit: I need to learn to spell.

[studebaker51]

I have a 97 Tahoe that I installed a Hypertech programmer (I got it cheap, too).It did not have a fuel choice. I usually run 89 octane with little problems, but it does rattle pretty good on 87, especially with the hot summer & moderate-to-heavy throttle.The only mods I have @ this time are a cat-back exhaust & a K&N replacement filter.Mine also has the capability of running diagnostic codes.

[GMCJunker]

what do you mean by rattle

[phat97yukon]

got one on my 99 hoe with only a magnaflow cat back and a FIPK on it, ive tryed on reg and premo, colder temps no prob but when we had some pretty warm days it was pingin on reg

[GMCJunker]

well im in Texas and your in Canada so your warm days are pretty much year round for us.

[hud697]

i have the same programmer and i run regular all the time even on the spray haven't had a single problem. the hypertec is not a very aggressive tune for our trucks. besides you make more hp on the minimum octane you can run without detonation

[Lchauvin88]

Dunno how much Id believe that post. I may be new here but I had a hpp3 for my 97 long bed 4.3 auto truck. It pinged hard on just 89 octane. And you couldnt go much over 2200rpms on 87oct.

And not to mention at wot the hhp3 advances the timing curve so i don't know how you're running spray with the power tune enabled, because that just seems like bs.

I would suggest waitforme, because I have bought 3pcms from Jesse Bubb and very satisfied with all of them. 167.85 shiped to my door, plus I kept my stock pcm so if I had to send it back to him I could still drive my truck.

[hvyhaul]

I got a 2000 obs with a big block, pp3 i believe, cold air kit and true duals and she runs great on 87, a minor difference just riding around but wide open for an 8k lb truck she screams. the only difference i can feel is at wide open, I accelerate from 30 to 60 the same as from 80 to 110.

[ajkrazy]

I have recently programmed my 98 Chevy 5.7 K1500 with the Hypertech III, and there were no noticeable power gains.

[hud697]

come to alabama, ill show you how it works. been doin it for about 1 1/2-2yrs. on this truck and no problems. dont believe all the advertizements the hypertech is a piece of **** unless you just want it to boost line pressure so you can bark 2nd gear.

[hud697]

Dunno how much Id believe that post. I may be new here but I had a hpp3 for my 97 long bed 4.3 auto truck. It pinged hard on just 89 octane. And you couldnt go much over 2200rpms on 87oct.

And not to mention at wot the hhp3 advances the timing curve so i don't know how you're running spray with the power tune enabled, because that just seems like bs.

I would suggest waitforme, because I have bought 3pcms from Jesse Bubb and very satisfied with all of them. 167.85 shiped to my door, plus I kept my stock pcm so if I had to send it back to him I could still drive my truck.
the more i think about this post i just have to say:middle: dickface, you callin me a liar?

[RichBremer1978]

With the custom tunes are you able to eliminate the top speed limiter and change tire size for odometer and speed? 100$ is the going rate for a custom tune?