Rawze.com: Rawze's ISX Technical Discussion and more

Update - Put Test my TEST 871 ECM on truck this morning and have boost as normal.

Once I figure out what has happened with ECM, I will update so if others run into a similar issue.

Who made the last file for it a year ago>?.

It would be very unusual for the program to work correctly for a year+ then suddenly change... but one never knows.

Maybe flash it back to factory programming.. let it run 10 minutes.. then e-mail the clean factory file to me so that it can be done properly with the latest version of software?.