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Type: Posts; User: JerryH

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  1. Replies
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    Not much to look at. Take the time to adjust...

    Not much to look at. Take the time to adjust your MAF table to provide the fuel up top that your engine is telling you needs.
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    What I want to know is... why are you even tuning...

    What I want to know is... why are you even tuning with the AC on? :)

    The "myth" that VE tunes do nothing is just that, a myth. On some cars it indeed does nothing, on a 98 and 99 GTP it is...
  3. One trick that I have been using for years is...

    One trick that I have been using for years is that there is a ratio between the factory high octane timing table and the mean torque table and when I work on the timing table, I transfer that ratio...
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    Bad move to keep tuning with a known hardware...

    Bad move to keep tuning with a known hardware issue. Misfires are 100% strong indications of hardware issues. It can be:

    - a bad plug
    - a bad wire
    - a bad coil
    - a bad ignition control module...
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    lol... wow, sounds familiar... matter of fact, it...

    lol... wow, sounds familiar... matter of fact, it is near an exact quote from my old tuning site. ;)
  6. Thread: IPC Programming

    by JerryH
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    5,645

    Besides... all publically available tuners tune...

    Besides... all publically available tuners tune the PCM... the mileage and additional info is in the BCM. ;)

    Since it doesn't matter what your odometer says, and you still have the original...
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    Dwayne, your PCM had some rewiring issues a while...

    Dwayne, your PCM had some rewiring issues a while back, if I recall? This could simply be a switched wire. This is so minor, I would not worry about it. If it works, it works. It's when you don't...
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    The HOT tables kick in when the tranny temps hit...

    The HOT tables kick in when the tranny temps hit "dangerous" levels. something like 240-250F. The PCM's response to this, in an effort to SAVE your tranny, is to lower lockup speeds, lower shift...
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    As soon as PE kicks in, it flips to open loop. ;)

    As soon as PE kicks in, it flips to open loop. ;)
  10. Thread: Tuning Issues

    by JerryH
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    7,228

    OMG, someone is reading my mind!

    OMG, someone is reading my mind!
  11. Thread: knock problems

    by JerryH
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    4,278

    Christ, here we go again. DO NOT SCREW WITH THE...

    Christ, here we go again.
    DO NOT SCREW WITH THE KNOCK SENSOR SENSITIVITY!
    A proper tune will let you run incredible timing without KR, and raise MPG and performance without knock.

    Telling...
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    It may not have 100% effect the first time. ...

    It may not have 100% effect the first time. After doing the TPS relearn, TPM may drop to 1500. Let car run a couple minutes, turn off, wait 30 seconds, turn on... drops to 1200.. then 1000... then...
  13. Not so oddly enough, tire tread wear will also be...

    Not so oddly enough, tire tread wear will also be a factor. A fresh tire with full height thread will read differently from a tire on it's last thousand miles. As the tire wears, it goes off slowly...
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    Don't forget to do the TPS relearn feature. ;)

    Don't forget to do the TPS relearn feature. ;)
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    It is true that boost will rise faster if timing...

    It is true that boost will rise faster if timing is lower... however Oz, I don't think that is your problem. If it wasn't your issue, you would be at least seeing SOME boost, not none at all.
    ...
  16. I am not sure on other cars, but on the 98-02...

    I am not sure on other cars, but on the 98-02 GTPs you can have a consistent 15 degrees of KR for over 2 seconds before it kicks in to the low octane table. A scan will easily show when this event...
  17. Yes and no. Though they get the info from the...

    Yes and no.

    Though they get the info from the same area (PCM), the mechanical differences between the speedo needle springs and what not are never going to be as precise as the DIC or HUD readout...
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    The proper multiplication factor is 1.18055, not...

    The proper multiplication factor is 1.18055, not 19%.
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    The supercharger boost valve has the ability to...

    The supercharger boost valve has the ability to be controlled a good range. When pressed all the way up, it will permit boost to hit sooner/faster at the expense of MPG. Pushing it down delays the...
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    The stock GTP fuel regulators are of fixed values...

    The stock GTP fuel regulators are of fixed values and you cannot adjust them. A person with the right abilities could use the FPR from a 1999 Cadillac STS with the N* engine and use that. It also...
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    No, once the trims lock in, they are locked in...

    No, once the trims lock in, they are locked in till you let off the gas and get out of PE.

    To smooth out the table, look at the graph and adjust values until the curve is smooth. You round UP the...
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    Could you have a bad batch of gas? Happened to...

    Could you have a bad batch of gas? Happened to me once... was a bitch until I refilled and drove out that tank. I stopped going to that gas station and things improved.
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    Disablng the EGR will render your car unable to...

    Disablng the EGR will render your car unable to pass an emissions test, cause a 1-2 MPG drop in mileage and increase warmup times in colder temps. Just something to consider.

    Besides the EGR...
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    Becuase your trims are not locked in at 0. Thats...

    Becuase your trims are not locked in at 0. Thats where your KR is coming from too.

    In an example in my other post, I used a 3% number by coincidence. Becuase you are locking in at +3, it is...
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    On my '99 it also is being heavily referenced and...

    On my '99 it also is being heavily referenced and used. I see a 4 MPG difference between having a tuned and untuned VE table. Car idles and starts better as well.
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