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 , 59 votes , 59 reviews
Best tuning company  
Hawaii   

The customer service at DRD is next to none. I'm located out in Hawaii with a different time zone, but that did not keep ray from responding quickly and accurately to my questions. His tune is great and works awesome. Their knowledge of the mm3 tuner surpasses every other company I've used in the past.

God bless the folks at Double R Diesel.

Thank you  
West Texas   

Thank you for your great products and service. Ray has been very helpful from start to finish. I'm running a MM3 in my truck and I'm very pleased.

Another satisfied DRD customer  
Long Island NY   

I ordered the complete mm3 tuner package with S&B intake and 5” turbo back exhaust and can only say wow. Tuner installed quickly, and the S&B intake was super easy to install. The exhaust fits perfectly, and as for customer service hands down best, I’ve had.

Emailed DRD late on a Saturday night with a question expecting a Monday response and they answered right back that night couldn’t be happier. You can’t go wrong with DRD thanks for everything 👍🏻👍🏻👍🏻

...more
Another satisfied DRD customer  
Donald    Long Island NY   

I ordered the complete mm3 tuner package with S&B intake and 5” turbo back exhaust and can only say wow. Tuner installed quickly, and the S&B intake was super easy to install. The exhaust fits perfectly, and as for customer service hands down best, I’ve had.

Emailed DRD late on a Saturday night with a question expecting a Monday response and they answered right back that night couldn’t be happier. You can’t go wrong with DRD thanks for everything 👍🏻👍🏻👍🏻

What a difference  
Corning, New York   

I was running an H&S tuner with custom MCC & trans tunes for a few years now but I was having a few problems. Every time I shifted from park to drive it would jerk the truck and you could feel it shift every gear. I'm running a second gen swap with an S467 and the turbo lag was unreal and once it started to build bost it would peg out at 60psi real quick therefore made it Uncontrollable. The

...more
What a difference  
Tyler Reed    Corning, New York   

I was running an H&S tuner with custom MCC & trans tunes for a few years now but I was having a few problems. Every time I shifted from park to drive it would jerk the truck and you could feel it shift every gear. I'm running a second gen swap with an S467 and the turbo lag was unreal and once it started to build bost it would peg out at 60psi real quick therefore made it Uncontrollable. The truck always wanted to shift early even in tow and would lug. I bought an MM3 and had Ray make me a tune and it's a night and day difference everything that aggravated me about my truck is now in the past. The adrenalin rush from this thing putting you right in the seat is unreal.

Thanks, Ray for all the hard work and time to get these tunes spot on. God bless and have a wonderful fourth of July.

Awesome Experience  
Fairbanks, Alaska   

I would like to say that from start to finish DRD has provided top-notch advice and service. I purchased an MM3 Tuner Lite Option, FLO~PRO 5" TBE SS with Muffler, the DRP EGR Delete and cooler reroute, Shibby Plug Kit and Pillar Mount.

I am very pleased with my decision to delete my truck and with the level of support DRD provided to me including my endless questions being answered. I have recommended DRD to numerous friends and will continue

...more
Awesome Experience  
John Bell    Fairbanks, Alaska   

I would like to say that from start to finish DRD has provided top-notch advice and service. I purchased an MM3 Tuner Lite Option, FLO~PRO 5" TBE SS with Muffler, the DRP EGR Delete and cooler reroute, Shibby Plug Kit and Pillar Mount.

I am very pleased with my decision to delete my truck and with the level of support DRD provided to me including my endless questions being answered. I have recommended DRD to numerous friends and will continue to do so.

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