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Old 03-19-2006, 03:37 PM
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Steve Chryssos Steve Chryssos is offline
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Your ECU is calibrated for an entirely different car: Different converter, different gear, different tire diameter different vehicle weight. So you can get LS1Edit, find a local LS1Edit tuner, or get an aftermarket transmission controller. All of those options have pros and cons. Regardless of which path you choose, you will find that a properly calibrated transmission will function and feel like an entirely different car (a much better car). In the case of Bill Howell's transmission, it was so far off, the difference was like going from a 307 2bbl (before) to his blown LS1 (after). A traditional shift kit can still be beneficial for improving mechanical line pressure, but the calibration might still be way off. An effective digital calibration is the key.

With the calibration done, you will probably need to shift manually to compensate for wheelspin. A quick, low rpm 1-2 shift can help.
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