Scott replied:
. . . While I couldn't offer specific help to the original posters problem I felt that perhaps added knowledge of how a turbine functions might aid him in diagnosing and fixing it himself.
Yep, lotsa good input, Scott, and yours was especially insightful. We've found with some of the other "tuneable" ECUs it is possible to tweak some of the parameters to compensate for some symptoms but not all. Jim and I talked about his situation the other day and my thought was to dig deeper into what the changes are in the newer(?) ECU firmware. This situation is kind of puzzling in that there's a
bunch of P-120s in these parts that work just fine. Bob Wilcox/JetCat has always been helpful and I'm sure he and Jim will get it sorted out.
Cheers.
Mike