Absolutely amazing tuner, very patient and knows what he’s doing. Answers emails very fast and just an all around great guy to work with. Will be using in the future and recommending him to anyone who asks!!

If your looking for a tuner you have found him. Our shop has used Derek on 4 cars now and every time he knocks it out of the park. AND he answers quickly. Finding a tuner that answers the phone and knows what he is doing is hard. Thank you Derek! more to come sir!

Got in touch to get my truck tuned and was very quick to respond, the tune was dialed in very quickly and drives a ton better! Very informative and was able to pinpoint a couple other issues that will be addressed asap as well!

I'd highly recommend and will be looking at future projects coming also!

I've worked with Derek a couple times now on remote tuning and will not work with anyone else. He is very professional, timely, and knowledgeable. Always a great experience!

Absolutely the best tuning experience you will ever have. Derek took my car from not running to drivable on a Friday night at well after 10pm. After a few driving logs the car is an animal. Revisions come back almost instantly. Had a few issues with the car and by just seeing the logs he pointed me in the right direction. DDTECH is the only option for remote tuning on LS engines.

Always top notch support, very responsive and helpful. Tuned my 2013 ctsv 427/kong2650 setup and thing is an absolute monster.

He remote tuned my turbo truck. Communication was very fast and answered any questions I had. Truck runs great .

I’ve been dealing with Derek for this past month getting my 04 LSA gto remote tuned. First this guys work and customer service is nothing short of excellent. I’ve delt with plenty of tuners and this by far the best experience I’ve had, car runs great, and he’ll answer any questions you have! Highly recommend for sure!

Derek Dunbar with ddtechtuning is an absolute pleasure to deal with! He has been on the remote tuning for my freshened up LQ4. Just did a little cam upgrade, some headers and a fully new gasketed motor. His response time is impeccable. The fine tuning from the first revision to the sixth revision was awesome to see and feel. Also sent me a separate tune for just regular 87 octane so I don't have to run 91 all the time.

Cannot recommend this guy enough! Still have a follow-up log to send him here in a few weeks to make sure everything is up to snuff but I'm sure that if there are any changes to be made they will be made in a very timely manner!

hands down wouldn’t go to anyone else , worked out all of my issues that i couldn’t get done with any other tuner healthiest and fastest the my car has ever been