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Help Please!

This is a discussion on Help Please! within the General Help forums, part of the LSx Technical Help Section category; I am asking this question for a buddy, and I would appreciate the help myself. My buddy called me and ...

  1. #1
    Member Blue_01_Z28's Avatar
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    Metallic Blue
    2001 Chevrolet Camaro Z28

    Help Please!

    I am asking this question for a buddy, and I would appreciate the help myself. My buddy called me and said that his car hits the limiter in all gears while racing it. He doesn't shift it manually and as far as I know it does not have a programmer. The tranny was just re-built and a UMI 3500 stall was installed. Why would the car hit the limiter in all gears?

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    Veteran 0rion's Avatar
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    his shift points need adjusted after the stall.

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    Member Blue_01_Z28's Avatar
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    Quote Originally Posted by 0rion View Post
    his shift points need adjusted after the stall.
    so it needs to be tuned for the stall

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    Member c5z28's Avatar
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    On your ass flashing
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    That would be a big yes.

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    Veteran 0rion's Avatar
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    Quote Originally Posted by Blue_01_Z28 View Post
    so it needs to be tuned for the stall
    yep, there are a couple of other areas that *might* need to be addressed also such as lock up points and misfire counts. He may run into a problem with his stall locking and unlocking randomly which is caused by misfire counts. Doesn't happen to everyone but it does to some....myself included. I had to disable misfire detection down low so the convertor would stay locked. Get in touch with frost on here about doing a mail order tune for your buddy. $125 and he can take care of all that.

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    Member 1986camarojoe's Avatar
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    Quote Originally Posted by 0rion View Post
    yep, there are a couple of other areas that *might* need to be addressed also such as lock up points and misfire counts. He may run into a problem with his stall locking and unlocking randomly which is caused by misfire counts. Doesn't happen to everyone but it does to some....myself included. I had to disable misfire detection down low so the convertor would stay locked. Get in touch with frost on here about doing a mail order tune for your buddy. $125 and he can take care of all that.
    I think mine does this. I can be cruising 65 n my RPMs jump up for a minute or two. Whats up with this?? drives me crazyyyy

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    Member Blue_01_Z28's Avatar
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    Quote Originally Posted by 0rion View Post
    yep, there are a couple of other areas that *might* need to be addressed also such as lock up points and misfire counts. He may run into a problem with his stall locking and unlocking randomly which is caused by misfire counts. Doesn't happen to everyone but it does to some....myself included. I had to disable misfire detection down low so the convertor would stay locked. Get in touch with frost on here about doing a mail order tune for your buddy. $125 and he can take care of all that.
    Cool, Thanks you have been most helpful. I will let my buddy know about the tune and see what he thinks.

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    Veteran 0rion's Avatar
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    Quote Originally Posted by 1986camarojoe View Post
    I think mine does this. I can be cruising 65 n my RPMs jump up for a minute or two. Whats up with this?? drives me crazyyyy
    it has to do with the lighter rotational mass of the smaller stall. It triggers false misfire counts which then unlocks the convertor. My best guess is GM set it up this way so that if a car is misfiring real bad the convertor won't lock creating additional load on the engine. You have to desensitize or disable the counts in the lower rpm's.

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