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 , 49 votes , 49 reviews
outstanding tuning and customer service  
Laurel, MT   

Ray and his team we're swift at answering questions prior to purchasing tuning for my raceme ultra. I purchased a 60hp tune and received promptly. The tune is day and night from the box raceme tune. It is great feeling all the power is going to the wheels when climbing hills. The torque converter locks up and it will go. DRD all the way.

WOW!!  
Morganton NC   

I have never seen a business work so Hard, Professional, And Lightning Fast in my life. That's until I did business with DRD!!

Got my tune same Day of purchase!!.. uploaded the tune next day and when I drove it all I could say was WOW!!.. Every single problem I had with the box tunes the warp tune from these guys fix everything!!... The only thing that I didn't like was myself for not doing this sooner!!... No Joke!! JJ

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WOW!!  
Ashlee Dale    Morganton NC   

I have never seen a business work so Hard, Professional, And Lightning Fast in my life. That's until I did business with DRD!!

Got my tune same Day of purchase!!.. uploaded the tune next day and when I drove it all I could say was WOW!!.. Every single problem I had with the box tunes the warp tune from these guys fix everything!!... The only thing that I didn't like was myself for not doing this sooner!!... No Joke!! JJ and Ray you guys are the Best. Thank you very Much!!!

*Excellent  
Cleveland, TN   

Decided to go with MM3 lite. This is my first diesel, I was a nerves wreck. I had a little problem sending my stock file. Emailed them at 8:00 one night got a response in 15 min. They confirmed they never got it. The second time I did it correctly. Apparently using an Apple computer doesn’t work! I still can’t believe at 8 o’clock at night they were answering emails. Installation was very easy! Follow the instructions, not any problems.

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*Excellent  
Jeff Winn    Cleveland, TN   

Decided to go with MM3 lite. This is my first diesel, I was a nerves wreck. I had a little problem sending my stock file. Emailed them at 8:00 one night got a response in 15 min. They confirmed they never got it. The second time I did it correctly. Apparently using an Apple computer doesn’t work! I still can’t believe at 8 o’clock at night they were answering emails. Installation was very easy! Follow the instructions, not any problems.

Thanks, guys!!!

Great product/customer support  
Tioga, North Dakota   

Love the MM3 Tuner/Tunes from Ray. I was very surprised at how quick I got my tunes literally 10 min. Later of sending in my stock file. Excellent response time I think. Truck runs awesome. Very impressed with everything.

Highly recommend to other Cummins owners out there.

Incredible  
Littleton   

My First Tuner for my Truck and I absolutely know I Bought the Best From the customer service I have received to the Product itself I couldn't be Happier. that said I can't believe the difference in my Truck and how good it runs any questions I have and ask Ray always answers.

For those reading reviews to make a decision look no further I researched many different products and Tuners the MM3 Tuned by DRD is the Best!

When


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Incredible  
Christopher Tennant    Littleton   

My First Tuner for my Truck and I absolutely know I Bought the Best From the customer service I have received to the Product itself I couldn't be Happier. that said I can't believe the difference in my Truck and how good it runs any questions I have and ask Ray always answers.

For those reading reviews to make a decision look no further I researched many different products and Tuners the MM3 Tuned by DRD is the Best!

When needed again I know that I'll be back for custom tunes when other upgrades are done

Thanks again Ray
God Bless

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