newbie asking about hypertech
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Advanced
Joined: Aug 2006
Posts: 92
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From: Columbia SC
newbie asking about hypertech
Okay, as a corvette for dummies level question.
I am a new owner of a '94 LT1. I have seen these hypertechs programmers...what effect do they have on a stock Lt1 with no mods so far?
I am a new owner of a '94 LT1. I have seen these hypertechs programmers...what effect do they have on a stock Lt1 with no mods so far?
5th Gear
Joined: Jul 2006
Posts: 5
Likes: 0
From: Lantana Florida
Hypertech
I have read elsewhere there is little to be gained. My personal experience differs.
I am programed for tune, temp, top speed, shift speeds and for my TransGo shift kit. If I remove the tune I notice a decreased performance at any and all speeds through WOT. It makes my 94 Vette start better, idle better and run better. The only negative about using my Hypertech programer is that I cannot de-tune it now. It would need to go to a dealership etc. to get re-flashed - or whatever they do to them. If I uninstall the Hypertech, it will no longer turn on the cooling fans and I overheat every time. Strange, yes, but true.
You have to use something to fix the computer if you put a shift kit in too. Hypertech does that. If you have nothing, the computer will smooth out the shifts for you, and cancel out what the shift kit is trying to do.
Also, I burn up my O2 sensors pretty frequently (25K). I haven't proven this to be because of Hypertech yet. I'll let you know. I am told it may be a bad MAP sensor causing this. I'm in here looking that up right now.
After "fixing" my O2 sensor, Chevy dealership told me it needed a new Optispark. But, they are idiots usually. They put one O2 sensor on for $425.00, then pulled a plug wire over the exhaust manifold causing it to burn through and wanted to charge me $1,000.00 to fix it by replacing the Optispark. Actual cost ZERO, Just fixed the spark plug wire placement and it is fine. Did I mention they are idiots?
I am programed for tune, temp, top speed, shift speeds and for my TransGo shift kit. If I remove the tune I notice a decreased performance at any and all speeds through WOT. It makes my 94 Vette start better, idle better and run better. The only negative about using my Hypertech programer is that I cannot de-tune it now. It would need to go to a dealership etc. to get re-flashed - or whatever they do to them. If I uninstall the Hypertech, it will no longer turn on the cooling fans and I overheat every time. Strange, yes, but true.
You have to use something to fix the computer if you put a shift kit in too. Hypertech does that. If you have nothing, the computer will smooth out the shifts for you, and cancel out what the shift kit is trying to do.
Also, I burn up my O2 sensors pretty frequently (25K). I haven't proven this to be because of Hypertech yet. I'll let you know. I am told it may be a bad MAP sensor causing this. I'm in here looking that up right now.
After "fixing" my O2 sensor, Chevy dealership told me it needed a new Optispark. But, they are idiots usually. They put one O2 sensor on for $425.00, then pulled a plug wire over the exhaust manifold causing it to burn through and wanted to charge me $1,000.00 to fix it by replacing the Optispark. Actual cost ZERO, Just fixed the spark plug wire placement and it is fine. Did I mention they are idiots?
Last edited by ggeiser; Aug 18, 2007 at 09:53 AM.
2nd Gear
Joined: Aug 2007
Posts: 2
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Personally I would avoid it. I bought one when my car was stock. I took it to a Dyno and made 2 passes. We waited an hour and I then put the Hypertech on. I made two more passes and I lost between 5-7 hp across the board each time. 
We waited another hour and then took off the Hypertech and I made 2 more passess. I gained back the lost hp.
We waited another hour and then took off the Hypertech and I made 2 more passess. I gained back the lost hp.
