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Tow/Haul Button

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Old Dec 15, 2006 | 10:56 PM
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Default Tow/Haul Button
I was wondering if the PCM can be tuned for lets say tune for motor and then with the tow/haul switch for nitrous???..using HPTuners.
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Old Dec 15, 2006 | 11:27 PM
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The Tow/Haul Button only changes Transmission Parameters.. Nothing to do with the Engine.
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Old Dec 15, 2006 | 11:55 PM
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oh i see.

can a stock 4l60e be tuned to shift manually or set so it wont shift automaticly when dropping the gears?
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Old Dec 16, 2006 | 01:31 PM
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Why do you want to shift manually if the computer can shift faster and better than you? Just tune it so that it shifts a whatever rpm or speed you want.
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Old Dec 16, 2006 | 01:48 PM
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You wont ever be as consistant as the Computer...
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Old Dec 16, 2006 | 02:02 PM
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autos can shift faster than anybody on a manual

you can get a manual valve body to shift manually
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Old Dec 16, 2006 | 03:37 PM
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haha go look at the 6L80E thread in the gm tranny/suspension forum and thats all ill say on this subject
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Old Dec 16, 2006 | 04:47 PM
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haha i was thinking the same thing as i read what he said.


So efilive or hptuners cant use the tow-haul function to control more parameters like a dual tune switch?
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Old Dec 16, 2006 | 04:51 PM
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no its tranny parameters ONLY but you could do like a street and race tranny tune

smooth shifts onthe street and rock hard shifts onthe race track
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Old Dec 16, 2006 | 06:54 PM
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What you could do, if you're running a 99-02 PCM, is install EFI Live custom operating system 5, which allows you to have a nitrous mode with a switch that you wire into one of the unused PCM pins.
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