Parts arrived on time but had pieces missing. The initial customer service was great and speedy. Once the packages arrived, we started installation (Friday night). There were some missing pieces in one of the kits and the programmer power cord didn't work. After speaking with customer service the following Monday (not open on weekends), they credited me store credit for missing bolts and got me in touch with RaceMe for the new cord. The guys were very helpful.

Great company to buy from. I purchased a kit for my powerstroke with h&s mini maxx. I couldn't install the tuner tof my truck so I tried to call hs and they are out of business. So I called dieselops.com, someone said they could help me and would send an email with instructions. I waited 2 days for the email before calling another company who sells these tuners, who helped me over the phone within 10 minutes. So long story short, they sold me something at a great price, and didn't offer any troubleshooting help. Won't be using them as a supplier anymore.

not impressed I got the wrong turbo I couldn't tell in the picture but this one is for a later 2004 f350 which has the different pedastool so now I have to get that other one. It's not that I want or need a sinister sticker or diesel ops sticker or shirt or receipt or anything but you figure when you spend 1600$ on a turbo you'd at least get a sticker and a receipt

took my $ and never shipped my item. took my $ and never shipped my item. 3 months later I have emailed them 4x called and left a vm 4x ZERO REPLY SCAMMERS!!!

Great customer service Great customer service, always got through when I called! The person who answered the phone was able to quickly and efficiently answer my questions. I just installed the kit I bought from diesel ops this weekend and I couldn't be happier!! The only reason I can't give 5 stars is because I ran into to a problem with the tuner, i had to research by my own accord to find out how to make it compatible with my truck. Otherwise 100%