I recently installed one of their air intake systems in my CHEVROLET DURAMAX and the difference in horsepower and torque was amazing. Combined with a complete removal kit including DPF pipes and tuners, my Duramax runs smoother and more efficiently than ever before, all of which I found at https://thedpfdelete.com/collections/gm-duramax/ where I was able to get high-quality advice for installation, as well as a discount, since I ordered spare parts from them for the first time!