Installed in a 2017 F350 CrewCab SRW with 6.7L PowerStroke on 37s. Performed better than expected. Have had it in about a week, haven’t noticed any fuel mileage increase due to the fact I have been playing with all the settings and new found power. Would absolutely recommend this product to anyone!! Great product, good price, and great results. We will be installing one on our 2019 Raptor very soon.
Thanks
Randy
Lakes Region, NH