Dr.PerformanceRX — Local services in Kellogg

"Heads-up warning about Dr. PerformanceRx diesel module and their advertisement of a 30 day no hassle money back guarantee".

I first purchased the Dr. PerformanceRX module for a 2015 Chevy diesel and it worked great for fuel mileage and performance.

So naturally I purchased it again for my 2021 Chevy with the same expectations of picking up two miles + to the gallon better. However, that wasn't the case this time. In fact, I was getting two miles+ to the gallon less driving & towing a 17k trailer. The extra performance was great, but that wasn't why I purchase the module.

Filling out the online return form and having the module back in their hands within the 30 day time frame after I received it, (sketchy) representative Annie, stated on June 30th that my refund would be processed after they had a chance to check the module out.

That was 38 days ago, still without a refund and no replys back to any follow-up emails and now they've blocked my phone number after speaking with another representative, Will... They know they have an issue with the Chevy newer engines and don't...

Dr Performance Module Hi my name is Terry and i have had my Dr Performance Module for alittle over a year now, and i just love it. I installed it on my 2017 Ford F-250 super duty, i am running 35x12.50 tires and reason got the module was because i lost about 3 mpg with my oversized tires. So when i installed it for the first time i couldn't help but notice that my truck just kept pulling and pulling, it just felt like there was no end to the power band, it was pulling all the way through my rpm range. I was extremely impressed. Then i notice an increase in mileage on the highway, now that it has been about a year the Dr Performance module has completely learned my driving habits and increased my mileage about 3 mpg. So now i am back to stock milage but with oversized tires. So not only more power, i get better milage, win, win!! I would recommend this Dr Performance Module to anyone who is looking for power and...

I installed the pro performance module on my 14 6.7 and she rips now. Turbo lag is all but gone and the bottom end torque management is significantly better. I can hardly feel the toy hauler fully loaded climbing the mountain passes and I notice a big difference getting to speed on the highway on ramps. Also seeing about 3mpg increase without a load and I have a solid lead foot. Definitely worth the cost I’m getting another one for...