The products are very well made and fit… The products are very well made and fit perfectly. Good customer service as well. My 1998 E350 runs much quieter with wide open throttle now.

very slow to get tunes delivered been a… very slow to get tunes delivered been a weeks and I still have not received mine when I was told both on the website and by a rep, that it only takes 2 days. will not be buying anything else

Very reasonable price would of got 5… Very reasonable price would of got 5 stars but they delivered to my house not to mechanic and I was out of town

Great product Great product. Shipping was a little slow. Said takes 3-5 business days to get. Order it on a Thrusday didn't come until the following Monday. The tracking info was kinda hard to see where the product was and when the updating with the package. Asked all my questions and information that I needed about the product.

Recieved programs for my Hydra from CNC… I recieved programs for my Hydra from CNC Fab. What a difference it made in power. I tried PHP and Gearhead programs, but CNC had the best seat of the pants power increase of all three companies. The CUMMINS KILLER program is AWSOME!!!