So I did some testing tonight, and decided to do some datalogs with and without meth. I haven't really used my meth kit since going upgraded HPFP since I didn't really need it anymore, but anyways.
Here are the results (click the images to be directed to full datazap log)
3rd Gear (NO METH):
Result: At 6700 boost is only hitting 17PSI although target is 22.2PSI. Also slight timing correction, but nothing serious.
3rd Gear (WITH SPRAYING METH):
Result: At 6700 boost is now hitting 19.7PSI while targetting 22.7PSI. Zero timing corrections.
Not sure why the car isn't holding that boost with the HPFP on E50 alone, but I plan on discussing my findings with my tuner.
Mod Setup:
MHD E50 Tune by Wedge Performance
Dorch Engineering Stage 1 HPFP
VRSF Catless DP
Dual Resonator Delete
Remus Axleback
AEM V2 WMI Kit w/ Dual 755cc ProMeth Nozzles