E-450 performance chip

All good points. While not a gear head myself, I worked with a group of aircraft mechanics and know from my avionics background that OEM ECMs are not programmed for max performance, they are programmed to comply with federal EPA guidelines which are not designed for max performance or min pollution to the air. OEM ECM programming I think will be the next search.

One thing for sure, I got lazy and did not dig enough into this one chip, it is a rip off.

Thanks!