how bad does using a bigger xover and DP throw off the tune? im going to be using a different tune anyway i was just kinda curious.
faster you can spool the turbo, the sooner you get boost. so the values will be thrown off, if your car has an adaptive ecu it might relearn it, but i doubt it does.
well some say a bigger diameter Xover helps spool up, some say smaller diameter creates velocity which in turn increases spool up so i figure a slight upgrade i couldnt go wrong maybe just increase flow enough before it throws off values like you say.