TPS optimization results: VERY good! - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 08-15-2004, 10:57 PM   #1
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Default TPS optimization results: VERY good!

Before doing any adjustments I recorded a 4.16 WOT voltage and bumped it up to 4.32-4.33. I swear to the almighty one that I was not entirely hitting WOT before because my car took off like a screaming eagle. She had more power than I can ever remember before. Maybe its in my head, but I know my car really well and its hitting higher boost with neck-cracking acceleration.

Anyway, a code was thrown after doing this so I started it up and turned the engine back off many times but it was still there (SES light). So I said screw it and went for a drive. Light didn't go off so I assumed maybe my idle voltage was too high. I checked it at .74, so after spending a LOT of time fiddling with that stupid idle screw I got the voltage to .71-.72. I started it up and the light was still there, so again I turned the engine on and off many times with no luck. So I got out to get ready to reset the computer to see if that would fix the problem, but I went back to try it once more and the light didn't come on.

I took it for a short drive and the light never came on again. I'm not sure if it didn't like a near .75 idle voltage or if messing with the TPS made her angry...either way I'm very happy with the results.

This TPS optimization in addition to pushing down the boost bypass had proven to be a great performance enhancement in my situation.
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Old 08-15-2004, 11:00 PM   #2
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Quote:
because my car took off like a screaming eagle
you're telling me
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Old 08-15-2004, 11:19 PM   #3
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Quote:
Originally Posted by zzzzzeke
Quote:
because my car took off like a screaming eagle
you're telling me
Ah yes, zzzzzeke is witness to the improvement in the butt-dyno.
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Old 08-15-2004, 11:36 PM   #4
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Now how about when we measured my TPS? .... LOL
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Old 08-15-2004, 11:40 PM   #5
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Well if you read where I printed out the procedure it says some factory idle voltages can be extremely low, such as in your case.

Read on: http://www.geocities.com/carnutguy/c...hancement.html
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Old 08-15-2004, 11:42 PM   #6
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Quote:
Originally Posted by Allmachtige
Well if you read where I printed out the procedure it says some factory idle voltages can be extremely low, such as in your case.

Read on: http://www.geocities.com/carnutguy/c...hancement.html
I know I saw 0.4X at the low end. Wasn't my high end at something like 4.4X?
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Old 08-15-2004, 11:52 PM   #7
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If this is a difference between the Series 1 and Series 2, we'll know tonight
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Old 08-15-2004, 11:56 PM   #8
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Quote:
Originally Posted by willwren
If this is a difference between the Series 1 and Series 2, we'll know tonight
According to the voltages listed in the link he provided, it may be that I just got lucky and already had mine set at the extremes. Even though I was a bit higher then what he set his at, and way lower than what he was at for minimum, I still fall within the volt ranges in that link......
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