Duramax 6.6 L5P – GM Silverado HD/Sierra HD – Projects released.
Please Note that disabling the Emissions may not be street legal in your country or state. All emissions deletes should be used on OffRoad/Racing vehicles only!
Chevrolet/GMC “L5P” 6.6 Duramax engine using E41 ECM is now supported with XDF file to be imported in HP tuners
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