Tuner purchase never came Tuner purchase never came I purchased a tuner early during the week with express shipping , customer service didn’t help at all . Canceled purchase

Great quality products at clove itompetitive… Great quality products at competitive prices

Great company to work with Ordered a couple Charge pipes due to Ford being on national back order and Sinister Diesel was able to help out with having theirs available. Great quality products, friendly service and quick responses.

Easy to find the part Easy to find the part, really should not have went out in the first place. But glad they had it. It was the on an off valve for the water filter. Was leaking. Poor construction is all I can think, plastic ball valve. Got 3 years out the older one. The price you pay for this stuff should be made unbeatable.

degas bottle not fit for 6.0 degas bottle not fit for 6.0. send back. not full refund -$70 exhaust manifold was stolen. no refund. no replacement. customer service (Marsha Eubank) HORRIBLE. didn`t help any. never had such a bad service. work before with AFE power, Mishimoto and Banks never had a problem like that Should read reviews before..