GM LN2 2.2L L4 98-03 OS Change..?

I have a 2002 4 banger S10 that's boosted. ECM's algorithm uses TPS for fuel, I was wondering if anyone knows any ways around there being no OS options on the tune file to change the VE tables from TPS vs RPM to MAP vs RPM? Anyone with turbo experience knows why there are many problems with that. The ECM is the same physically as the V6 and Gen III V8 series, such as the 4.8, 5.3 and 6.0. I'm just trying to explore my possibilities before going standalone, if I can save a few hundred bucks. Factory (current) OS is 12223041

I know this was 6 months ago, but did you find a solution? I?m currently in the process of installing a T3/T4 on my 2.2 flex. From the research I?ve done, we?re supposedly able to ?write entire? a stock 2002 Cavalier SC (LD9) file to our PCM?s, and be able to utilize the factory 2 bar VE table for SD tuning. While I?m here, can anyone else verify/ elaborate on this? It seems to be the ?unicorn? of Gen 3 L4 tuning.