I've been playing around with T-SMEC cals a bit after a lot of reading, and seem to be understanding most things, except for an issue that I'm having with computer boost control.
Car has a 2.2, intercooled, with a mitsu turbo. Wastegate is plumbed per the 1989 T-1 diagram. Stock computer seemed to control boost just fine, though I never logged it.
I first flashed the T-SMEC_22_MTX_A553_Stock calibration, with a few tweaks to overboost settings (the defaults were set with a timer overboost somewhere really low?) Boost control seems to work fairly well with this. Maybe a bit sluggish to spool, but once it does, it controls fairly well. Duty cycle reacts as I would expect. Spreadsheet of a log with this setup:
https://docs.google.com/spreadsheets...it?usp=sharing
I then tried the T-SMEC_22_MTX_S-II calibration, again tweaking the overboost settings and a few configuration flags, turning off staging and turning off T-2 boost control. Boost control seemed to not work properly at all. If I step right into WOT, I get somewhere around 4-5 PSI of boost, and the computer doesn't even seem to be trying to raise it through duty cycle. Boost target is correct, but the duty cycle never raises high enough to build boost. Oddly enough though, if I ease into WOT very slowly, duty cycle will raise a bit, and I'll get into 8 or 9 psi. Still not target, and duty cycle never sees anywhere near 100%, but it still raises higher than pushing right into WOT. Spreadsheet:
https://docs.google.com/spreadsheets...it?usp=sharing
I also tried the T-SMEC_22_MTX_4344_MP cal, thinking that maybe it was a codebase issue and the original Mopar-based calibrations would have different code. The MP cal worked very similar to the S-II cal. Duty cycle simply never rose enough to even try building boost.
Any thoughts on this? It definitely seems to be an issue in the computer, it just isn't commanding a high enough duty cycle.