H & S mini max tuner
very helpful with all questions and great price
By Bruce W.
Sunday, November 8, 2026 · Customer reviews of US businesses
The Fair Hearing score
Excellent
724 reviews
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Shop Aftermarket Diesel Parts for your Cummins, Powerstroke, Duramax, or any Diesel Vehicle. We specialize in quality products with better customer service!
Diesel Ops (dieselops.com) has 724 customer reviews on The Fair Hearing, with an average rating of 4.7 out of 5.
724 approved reviews, newest moderated first
very helpful with all questions and great price
By Bruce W.
Fast friendly service, great fit
By Donald H.
Fast shipping great service.
By john B.
Great service and very helpful with questions I had . H&s mini max is a awesome programmer to delete the oboma filters on diesel trucks today. The pro-flo pipe sounds great and both together gives awesome performance of truck (08 f250 6.4) will give you up to 300hp and gives more mileage on fuel . I went from 11-13 mpg to 15-22mpg on high way and I get about 12-15 mpg in town . Thanks diesel ops for the awesome products !!!!!
By Justin E.
Fits perfectly sounds awesome
By JS
tuner went in after some tech help pipe was a buggar but went on after a little modification..
By terry L.
Parts needed some modification to fit correctly. Instructions were not included with the kit. It was difficult to find the information for my truck.
By Tim F.
Response from Diesel Ops· Jan 11, 2017
Hello Tim, I am sorry you had some issues with that we have made some changes with the way install guides are sent over so this kind of thing does not happen again. Please let me know if there is something I can help you with and get this taken care of Looking forward to hearing back from you Chris (Sales Manager) 888-992-7299 ext 702
I ordered a programmer from diesel ops and did not know how to do what I wanted but they were able to walk me through it step by step
By Ethon K.