i have a 1992 sc300 with a JDM 1jz full swap...
the car has been tested for boost pressure... it's pumping out over 13 with no upgrades except a blitz chip in the stock soarer ecu. The engine looked wired for a VPC when i did a swap, but did not have the VPC attatched.....

My tech said there is a low vacuum pressure(15 instead of 17) but since there's no live data capability he can't find the problem!!!

Could it be that the chip was specifically for the VPC upgrade, so that's why i'm getting fuel cut-off and stuttering when i gas it?
or is it something else??? The car runs fine with no Intercooler hook up...(won't stutter at all)....hook it back up and it gets "jumpy" when gassed...

Help before i spend two G's on a ghost problem!!!