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The 2.8L Duramax AutoCal comes with 4 different power levels, all of these power levels are safe for a stock trans and are HP increments over factory HP.
Optimized Stock- 15hp
Maxx Effort- 60hp
It takes about 10-15 minutes to install the tuning with the autocal. Once the tuning is installed the tunes can be changed off ...
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Heavy duty plug
Made from steel
Includes premium o-ring
Our fuel rail plug kit replaces the stock or shimmed pressure relief valve. Removing the stock pressure relief valve will help maintain fuel rail pressure during full throttle driving by completely blocking the pressure relief port. It also helps eliminate low fuel rail pressure DTC cod...
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