Kenny Parker

Just put the Dr. Performance module in my 2019 Chevy Duramax cab and chassis and definitely a noticable difference.

Josh Kremer

Great product! There is a noticeable power increase and the turbo lag is almost gone. Time will tell on mileage but I started a new trip after I finished the install. I did a test drive and noticed a 3 mpg increase over the trip meter I had going for the current tank of fuel. Again, great product and great customer service! They stand behind their product and take care of their customers. I would buy again!

Heather Rayne

The staff at Dr. Performance is wonderful and helpful! They have extensive knowledge in the products they sell and go above and beyond to make sure their customers are satisfied! It was a great experience!!!! Highly recommend!!!