I think that GMPX is working on finding the transient fueling table and add it to the tune file definitions for some tunes.

Questions:
- did your tuner adjust the injector flowrate table...?
- did he adjust your VE and/or MAF tables...?
- did he adjust the OL AFR and PE AFR tables...?

If it's ok, post some logs (I don't think he would mind logs, but I think he will mind the tune).