Andrew M.
No problem fit like it should
No problem fit like it should

We specialize in diesel truck emission system optimization and supporting accessories, offering a professional product matrix tailored to diverse vehicle models and owner needs. Our core emission optimization lineup includes EGR delete kits, DPF delete exhaust pipes, tuners, and more, all precisely engineered for mainstream diesel platforms like Powerstroke, Duramax, and Dodge, empowering owners to overcome emission limitations and unlock their truck's full power potential.
Dieselperf (dieselperf.com) has 4 customer reviews on Five Star Index, with an average rating of 4.0 out of 5.
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4 approved reviews, newest moderated first
Andrew M.
No problem fit like it should
Arnulfo
All Parts came as shown online. Easy to install! Only challenge was getting the bolts out, I had to use a reverse bite and then they came out easy.
Oscar R.
Sent info 1 hour after I realized I bought a H&S programmer instantly cancelled,finally someone got back sad sorry to see u cancelled can I ask why I said I already have 1 I ordered by mistake ,but I’m still trying to to get my money back.Still waiting unreal plus I wouldn’t buy a new h$s v1 no one to talk to because there junk when they don’t work the company’s selling them r rude and don’t care when you tell them it doesn’t work.They took my money still holding my money .And never sent the tuner.
Colby
Easy to order from, great pricing, and great customer service.
Response from DieselperfApr 29, 2026
Thanks for your kind feedback! We really appreciate your support and glad you love our service. 😊