Save a few dollars & purchase the Hot X Tune & MCC Unlock together!! 

If you want the maximum performance from your 6.6L Duramax this tuning is it. We have seen around a 50hp gain over the box tuning. This tuning maxes out the stock CP4 High pressure fuel system. You will notice better throttle response and overall drivability all while increasing the power levels.

The tuning includes:

  •     No Power
  •     Mild 370
  •     Wild 420
  •     Hot 545

To run this tune efficiently you need- DPF delete/exhaust, intake, and a H&S tuner with MCC unlock. 


*Tunes are most often sent in the morning. Please note, on rare occasions, you may not receive your tune for up to 72 hours.

*Dyno results may vary due to brands, correction factor, smoothing, etc.



*** Not legal for sale or use on pollution-controlled motor vehicles anywhere in the United States. Legal ONLY for off-road competition racing vehicles and cannot be used on vehicles that are operated on public streets, roads or highways. this product is not for sale or use in the state of California.

By submitting your order from Snyder Performance Engineering, you declare you have read and accepted all of the terms, conditions, and responsibilities of your purchase.

By Purchasing from SPE you understand that all products are for offroad use ONLY unless otherwise stated. Violations may result in a fine of up to $32,500 per vehicle (or possibly higher depending on changes in the law). All penalties and/or fines for removing your vehicle’s emissions equipment are the sole responsibility of the end user.***