HyperTech Power Programmer questions
Thread Starter
Drifting
Joined: Jun 2000
Posts: 1,955
Likes: 2
HyperTech Power Programmer questions
Just got my HPP from a Forum member (great deal, thanks!). I mainly bought it to turn the fans on earlier, and for when (if?) I install deeper gears or a lower temp stat.
But, I have heard that the Power Tuning Program has made some cars run slower at the track. Anyone have experience with this, particularly with an LT4? Does it have any other side effects (positive or negative?).
Should I head to the track and run my car stock, then with HPP and see the effects for myself? I'd rather not abuse the '96 too much...85K miles on the stock clutch and it's a daily driver...not up for a clutch job any time soon.
Thanks,
Jeff
But, I have heard that the Power Tuning Program has made some cars run slower at the track. Anyone have experience with this, particularly with an LT4? Does it have any other side effects (positive or negative?).
Should I head to the track and run my car stock, then with HPP and see the effects for myself? I'd rather not abuse the '96 too much...85K miles on the stock clutch and it's a daily driver...not up for a clutch job any time soon.
Thanks,
Jeff
Le Mans Master
Joined: Aug 2001
Posts: 5,626
Likes: 1
From: Cinti,OH 2004 Z06
CI 4-5-6-7-8-9-10 Veteran
St. Jude Donor '07-'09
Re: HyperTech Power Programmer questions (no_radio)
I just installed the hypertech program yesterday and it fried my pcm unit.
I sent them the pcm and unit back. My can is dead-in-the-water right
now :smash:
I sent them the pcm and unit back. My can is dead-in-the-water right
now :smash:
Burning Brakes
Joined: Jan 2002
Posts: 1,228
Likes: 1
From: Dallas Texas
Re: HyperTech Power Programmer questions (vader86)
If the information I have read on the 'net can be trusted, the HPP III is the version that can actually cause a power loss, while the HPP III+ (note the "plus") supposedly fixed the problem.
This is just what I have read, so you may want to call them to verify.
I concur that it is pretty worthless as I have one too, for the same reasons as you, turning fan on earlier, correcting for new gears.
This is just what I have read, so you may want to call them to verify.
I concur that it is pretty worthless as I have one too, for the same reasons as you, turning fan on earlier, correcting for new gears.
Drifting
Joined: Oct 2001
Posts: 1,759
Likes: 0
From: Round Rock,Austin, Texas
Re: HyperTech Power Programmer questions (no_radio)
I didnt use the power programming specifically for that reason. I just went through and changed all the things I thought needed to be changed and that worked just fine :thumbs:
Thread Starter
Drifting
Joined: Jun 2000
Posts: 1,955
Likes: 2
Re: HyperTech Power Programmer questions (RadPolo96)
I didnt use the power programming specifically for that reason. I just went through and changed all the things I thought needed to be changed and that worked just fine :thumbs:
I think the box said "plus" but will have to look when I get home.
Thanks!
Jeff
Le Mans Master
Joined: Aug 2000
Posts: 6,227
Likes: 0
From: Corona CA
Re: HyperTech Power Programmer questions (no_radio)
I tried the Power tuning on mine and while I have no proof I feel I lost power. I then reset it to stock and just use it for fans.
After thinking about it I keep wanting to try the Power Tuning again and this time use a mix of Premium gas, 91 Octane here, and 100 octane gas. I know the LT4 has a high compression ratio, 10.8:1 and was designed to run with premium that was 94 octane at the time. I am just wondering if that will make a difference...
After thinking about it I keep wanting to try the Power Tuning again and this time use a mix of Premium gas, 91 Octane here, and 100 octane gas. I know the LT4 has a high compression ratio, 10.8:1 and was designed to run with premium that was 94 octane at the time. I am just wondering if that will make a difference...
Le Mans Master
Joined: Feb 2002
Posts: 7,858
Likes: 2
Re: HyperTech Power Programmer questions (rcolling)
One thing I learned about the HPP after talking on the phone to one of their techs: When you select to program the car back to stock (totally ditch all hypertech features and reinstall stock program) the final act the unit does before the programming process is done is to clear any stored codes and clear the learned performance memory, i.e. it basically does the same thing as pulling the battery power. So when driving the car after reinstalling the stock program the ECM will be in relearn mode for the first however long 20 to 50 miles or so same as if you had disconnected and reconnected the battery.
That might account for why the car feels stronger just after reinstalling the stock program.
But I still just use mine for fans and shift firmness. Mine is a Power Programmer Plus-- doesn't say anything anywhere on it about III.
That might account for why the car feels stronger just after reinstalling the stock program.
But I still just use mine for fans and shift firmness. Mine is a Power Programmer Plus-- doesn't say anything anywhere on it about III.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
Advanced
Joined: Aug 2000
Posts: 97
Likes: 0
From: St Paul MN
Re: HyperTech Power Programmer questions (Lone Ranger)
Although I've never personally used the HPP III, I have a friend who has (Duntov). He has the dyno results to prove that the performance changes are worthless. If I recall correctly, he picked up about 1 hp, and lost about the same amount of torque. This is probably within the tolerance window of the dyno itself, meaning the programming really didn't do anything of significance, if at all. If Matt sees this, hopefully he'll give you the exact numbers.
Hope this helps.
Ted
96 CE LT4 Z51
Hope this helps.
Ted
96 CE LT4 Z51
Le Mans Master
Joined: Apr 2000
Posts: 6,294
Likes: 0
From: Amateur driver on open course.
Re: HyperTech Power Programmer questions (vader86)
performance settings on that thing are worthless
Safety Car
Joined: Sep 2000
Posts: 3,524
Likes: 4
From: Hinckley Ohio
Re: HyperTech Power Programmer questions (no_radio)
Per the HPP instructions, the fans will turn on at 192 and off at 185. I posed a question related to this on a recent post and got no responses. It would be my opinion that these temps are a little too high to get the full benefits from a 160 stat. I had a very early version (96)on my LT4 which apparently put the fans on much earlier and the car never went above about 178 even in traffic.
Regarding performance all I can say is no seat of the pants difference.
HPP replace my original programmer at no charge since in would not reprogram for the 4.10 gears. This was in Nov 2001.
Regarding performance all I can say is no seat of the pants difference.
HPP replace my original programmer at no charge since in would not reprogram for the 4.10 gears. This was in Nov 2001.
Drifting
Joined: Jun 2002
Posts: 1,305
Likes: 11
From: Savannah Ga.
Re: HyperTech Power Programmer questions (LT4BUD)
quote:
________________________________________ ____________
. HOWEVER, for us automatic guys...the shift firmness and shift point tuning is absulutely awesome! My car shifts bada**! I also used it for my gear swap, and for the fans.
________________________________________ ______________________
I have reprogramed the gears, and fans with my HPP+... but I would like to know what setting did you tune on your A4 to get that awesome shift points???
________________________________________ _______________
[Modified by redcorvettedave, 3:07 AM 4/19/2003]
Le Mans Master
Joined: Apr 2000
Posts: 6,294
Likes: 0
From: Amateur driver on open course.
Re: HyperTech Power Programmer questions (redcorvettedave)
Well, the shift firmness is easy. It's either set to firm, or not. For shift "points", you can add mph to each upshift depending on where your shifting at the track. For example, my A4 was shifting into fourth a few hundred feet before the line. By adding mph(2 I think) to the 3-4 upshift, I was able to delay the shift until the line.
Melting Slicks
Joined: Jan 2000
Posts: 3,418
Likes: 1
From: NW Chicago Suburbs
Re: HyperTech Power Programmer questions (Joeyvette)
I would love to know the shift points myself if anyone knows.
Eric
Le Mans Master
Joined: Feb 2002
Posts: 7,858
Likes: 2
Re: HyperTech Power Programmer questions (LT4BUD)
Important to realize there are two fan speeds involved, low and high. On the HPP+ for my '95 using the 160 tstat fan settings the fans turn on low speed at 185-- you can't hear them with motor running but can see them spinning and if you shut the motor down you can then hear them spin down. They go to high speed at 192--you can then hear them 'roar' when the engine is running same as if the a/c was turned on. So what the HPP+ is doing is first turning them on low rpm at 185, but if low rpm fan speed doesn't keep the coolant temp in check then at 192 it kicks them into high rpm. There should also be a vehicle speed at which the fans are turned off referred to in the ECM as hysteresis speed, for instance it might be, say, 30mph and the fans get turned off because running them beyond that vehicle speed would actually begin to obstruct the ram air flow to the radiator. If anyone knows the hysteresis speed for the fans in the LT1/4 ECM please advise-- I don't.
The downside of the above is that in summer the fans run quite a bit, i.e. wear and tear on the fan motors.
[Modified by Lone Ranger, 9:10 AM 4/19/2003]
The downside of the above is that in summer the fans run quite a bit, i.e. wear and tear on the fan motors.
[Modified by Lone Ranger, 9:10 AM 4/19/2003]
Le Mans Master
Joined: Oct 2000
Posts: 5,086
Likes: 0
From: Northern tip of Virginia
Re: HyperTech Power Programmer questions (no_radio)
Should I head to the track and run my car stock, then with HPP and see the effects for myself?
Jeff
also, a couple guys asked about shift points (raising the shift rpms).
going to the track and gradualy increasing the shift points, and checking times is the only way to properly set them.
I have mine set at +3 for the 1-2 shift.........+2 for the 2-3 shift.
Racer
Joined: Nov 2002
Posts: 320
Likes: 0
From: Bradenton Florida
Re: HyperTech Power Programmer questions (no_radio)
I dont even get out of 2nd on the 1/4 untill right after the line, whats the deal, do you guys have taller gears? But would you say the HyperTech is worth it?
Racer
Joined: Apr 2003
Posts: 305
Likes: 0
Re: HyperTech Power Programmer questions (Phil-tha-Rush)
As far as going to the track & testing-I ran my 94 coupe w hypertech & it ran a best of 13.13@ 106.mph.Without the hyper-3 it ran 13.06 @ 106.50 mph.with the stock tuning!MY car is very stock [k-n,air-foil,zz-4 cam].I now just use it for the fans & shift fimness until PCM FOR LESS sends me a new pcm when my paypal is activated.
