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Thread: TPS vs RPM

  1. #1
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    Default TPS vs RPM

    My 2000 Corvette is heavily autocross-ed (BS) and occasionally in 2nd gear, the car will not accelerate quickly when the tach is around 3500-4000 rpm. Since the season is over I was looking at several log runs. In checking the tune I noticed C3906 might be limiting my throttle from opening faster, I was wondering if I would be better off increasing the upper limits between 2800 rpm and 4800 rpm and having it go to 95 or 100% from 4800 and above?

  2. #2
    Joe (Moderator) joecar's Avatar
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    Are you seeing any TPS DTC's...?

    Try what you said and see what it does.

  3. #3
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    I will make the change and see if any DTC get set.

  4. #4
    Joe (Moderator) joecar's Avatar
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    If you see any TPS DTC's then table C3906 is being exceeded... of course check that the TPS DTC's are enabled in C6001.

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    There were three that we not reported so I turned them back on. P0121, P0122 and P0123

  6. #6
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    Ran a scan last night and there were not DTC's tripped. Also I noticed it felt like an improvement in mid RPM acceleration. When time permits, I will look at the scan and see if there was measurable difference as I ran a similar scan just before I flashed the changes.

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