H&S Performance Coupons – Verified Deals & Offers | October 2026

Great deal on a tuner

I was looking for a good price on a Powerstroke Tuner and H&S Performance had a great bundle deal on it. I saved a decent chunk of change compared to other sites. Shipping was also pretty quick. Definitely felt like I got my money's worth.

Good product, minor shipping issue

I ordered a Mini Maxx Diesel Tuner and it arrived in about a week, which was reasonable. Installation was straightforward with the instructions provided. The tuner works as expected, giving my truck noticeable performance gains. My only slight complaint was the packaging; it seemed a bit minimal for an electronic device. Overall, I'm satisfied with the purchase and the value for money, but they could improve on their shipping protection.

My truck runs great!

I got the Full Exhaust System and an XRT Pro Street Tuner and my Duramax is a beast now! The sound is incredible and the power is exactly what I was hoping for. The order process was easy and it shipped quickly, too. I'm so happy with this upgrade and will absolutely buy from them again!

Got what I needed

Needed a new OBDII Cable Replacement for my tuner. Found it here, ordered it, and it showed up pretty fast. Fit perfectly, so no complaints. Easy peasy.

Solid upgrade experience

I decided to upgrade my Dodge Ram and went with the Mini Maxx Diesel Tuner along with a DPF Delete Pipe. The ordering process on their website was smooth, no confusing steps. Shipping took 6 days to get to me in Arizona, which was within the estimated timeframe. Everything was packaged securely, and all parts were accounted for. I even had a quick question about the install and their customer service was helpful, answering my email within a few hours. The tuner and pipe made a significant difference in my truck's performance and fuel economy. The instructions were clear enough for someone with basic mechanical skills to follow. It's a noticeable improvement, and I'm glad I chose them for these parts.