the boost leak has only manifested itself since fitting the JB4. So you think the increased boost has highlighted a existing condition? Would make sense i guess. I did discover that like a noob i had not manuallt set the AFR's . Is it worth me loading map 1, setiing them correct and trying a run?
JB4 G5 iso - Borla Catback Exhaust - Active Autowerks Chargepipe and BOV - BMS Intake - Alpina Gearbox Flash - Apex Springs - Koni Shocks -BBS LM Reps Whiteline Rear subframe bushes BMS Meth kit waiting to go on