ISX15 cm2350 boost surging around 60mph

[Rawze]

- Its not likely nearly out of the woods. Copy the program from the ECM and have it reviewed to ensure its safe and stable. More than90%+ of all de-mandate programs are absolutely harmful to the engine and its turbo.

Next, you say you have built a lot of engines. This is the place to take that skill to the next level. Here is what you will no longer find in any manuals, and these are things that you should absolutely be doing every time you tear into one. Anything less and its not going to be right ...
ref: http://rawze.com/forums/showthread.php?t...6#pid70606