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OBD2 Tuning 3.4 DOHC

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  • OBD2 Tuning 3.4 DOHC

    The 97 4T65 in the Monte Carlo is almost bullet proof. I have been beating the crap out of my reman with my blower now for 2.5 years of daily driving vs the 60 NA that I couldn't get 1 year out of. 4 Trans in 50K miles. I'm a violent offender.

    Overfilling and royal purple atf are my secret.

    DHP will do 96 and 97 DOHC tuning, HPTuners only works with the 97 computer. 96 can not change line pressure, 97 can.
    97 bin is double in size of the 96 bin. They changed every thing and it has every table that the 97 GTP has, including performance shift mode that is disabled by default, but can be enabled. The 97 swap is an all around good thing.
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