Total Sales – $0.00Sales History – $
$299.99 – $1,049.99
TCM Tuning is STRONGLY recommended by our calibrators to accompany your L5P ECM Tuning.
— OR —
HP Tuners, PPEI
HP Tuners Custom Tuning
2017+ Duramax L5P
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L5P Tuning and selections are now available! We VERY strongly recommend that you purchase TCM Tuning alongside this package.
We currently have limited stock of our HP Tuner modified L5P E41 ECMs. This will cause any orders with this option to be delayed. Emissions Compliant tuning only.