RomRaider

Looking for a little insight here, done a lot of reading and minimal tuning in fear of screwing something up.

I have an 07 sti, freshly rebuilt
SPT intake
3” catless turbo back
Rebuilt Vf39 since the vf43 died from oil starvation with the motor blew.

I’m running gabedudes 07 STi stage 1 tune, but I know with the catless exhaust setup I need to refine some things.

My question, can I tweak just the WGDC and target boost to accommodate the additional modes or do I need to be looking at all the parameters to ensure a proper stage 2 conversion.

Thank you!