Customer Testimonials

Testimonials from our Customers

Our success shines through our customer testimonials. Take a minute to see what our customers are saying about us. If you are a customer and haven’t let us know how we did, please leave us a review below. We’d love to hear from you!

Company : Double R Diesel LLC
Website :
Aggregate Review : Customer Reviews:  5 out of 5 , 135 votes , 136 reviews
Exceeded expectations  
ID   

I'm not a professional mechanic but do the majority of my own maintenance. That said, this project had me a bit concerned. Much of my concern was unwarranted, the tuner installed quickly and programmed my truck without a problem. Once the deletes were installed, I found the truck was transformed! With all standard deletes removed/ replaced, there are no cell lights. The "exhaust brake" works well, the truck at the lowest tune has excellent power and drivability. I couldn't be

...more
Exceeded expectations  
Talmadge Caviness    ID   

I'm not a professional mechanic but do the majority of my own maintenance. That said, this project had me a bit concerned. Much of my concern was unwarranted, the tuner installed quickly and programmed my truck without a problem. Once the deletes were installed, I found the truck was transformed! With all standard deletes removed/ replaced, there are no cell lights. The "exhaust brake" works well, the truck at the lowest tune has excellent power and drivability. I couldn't be happier! I am telling my friends about this tuner!

Exceeded ANY/ALL expectations!  
Kansas City, Missouri   

Rays and his tunes turned an $85k lawn ornament back into a functioning farm truck and toy!

I can't say enough great things about Ray and the guys at DRD. I genuinely feel like my five-star review isn't enough, Ray and his sales team have responded nearly immediately to all inquiries, they're incredibly knowledgeable and have helped this Cummins greenhorn every step of the way.

As long as DRD remains this is the ONLY company, tuners, and tunes I will

...more
Exceeded ANY/ALL expectations!  
Ian M Wright    Kansas City, Missouri   

Rays and his tunes turned an $85k lawn ornament back into a functioning farm truck and toy!

I can't say enough great things about Ray and the guys at DRD. I genuinely feel like my five-star review isn't enough, Ray and his sales team have responded nearly immediately to all inquiries, they're incredibly knowledgeable and have helped this Cummins greenhorn every step of the way.

As long as DRD remains this is the ONLY company, tuners, and tunes I will deal with purchase and install. I can't thank you all enough! If anyone reading these reviews has any doubts about the quality of parts tunes or customer service provided by DRD let me tell you;

These testimonials may seem a little hard to believe, but I assure you they are everything they claim and more!

Outstanding!  
Harlingen, TX   

I purchased the emission compliant tuning package about a month ago, and I can not say enough to explain the difference. I am running the 60 hp tune as my daily setting, and it feels like a completely new truck. Like others have said, this is the way it should have come from the factory. I have played with the other levels, and they are a blast. I ran the 30 hp "tow tune," and the truck felt better under

...more
Outstanding!  
Emilio Moreno    Harlingen, TX   

I purchased the emission compliant tuning package about a month ago, and I can not say enough to explain the difference. I am running the 60 hp tune as my daily setting, and it feels like a completely new truck. Like others have said, this is the way it should have come from the factory. I have played with the other levels, and they are a blast. I ran the 30 hp "tow tune," and the truck felt better under load. This is my "do everything" vehicle, so I don't trash it, but it has to work when its time to work. After reading everything I could on the subject, there was not doubt in my mind I had to go with DRD.

Great Products, Great Customer Service  
Fort Myers, FL   

MM3 Tuner and tunes are spot on. Very impressed with how user-friendly the MM3 is. Had a faulty EGT sensor that they quickly swapped out for me and everything works perfectly now. Will definitely be giving and referring DRD future business.

Went with the best tuner and tuning.  
Washington   

Extremely fast shipping on my MM3 tuner with DRD tuning, it arrived a day early. The tuner is simple and easy to use. Easy and fast communication with Ray. I would recommend his tuning to anyone.

Add a Testimonial

Email is not published:
Check to approve saving of testimonial data




Verification Captcha
* Required



Facebook
Facebook
Instagram
Twitter
YouTube
YouTube