Re: Which Performance Chip do you have?
i bought this improved calibration after reading mark haybeck`s site...my car`s 1-4 shift was disabled after installing the new calibration.as mark said it would..you can read the results on mark`s site under calibration for 1990..imo,its the best bang for the buck,for a stocker....mark also said 10%more torque because of more consistent underhood temperature,although i never mentionned the fans...jmo,anyway
blackjack
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