The eprom chips have to match the pump your using. Kennedy sells one for the change over. You must specify if it is auto or manual tranny. I am using it with no issues and with the manual wastegate I'm getting 13.5-14.0 psi boost and no defueling or SES codes. This is just my experience.
I have the 5068 that has been green tagged (updated) Don't know how long it's been on truck. Considering changing out the eprom chip to accept the more readily avail. 5521 pump.
When I start my truck up in the mornings, it stays running all day long. Once it gets up to operating temp. and is shut off it refuses to start. So far we have new PMD with heat sync, new lift pump, new ops, lifters, rockers, push rods, fuel lines, starter, batteries, cleaned all grounds. Have...