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PPEI 2017-2019 GMC/Chevy L5P Duramax 6.6L TCM Tuning | HP Tuners

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  • Regular price $374.99
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Optimize shift points, line pressure, converter lockup, increase efficiency, and utilize adaptive shifting.

HPTuners Modified ECMs & TCMs are currently on backorder. We expect to receive them in small quantities and will ship out accordingly.

This tuning package can only be installed using the HP Tuners RTD or MPVI2.

 PPEI is making great strides in expanding the performance of on-highway vehicles and only offers emissions compliant tuning.