Hi guys,
got a bit of an annoying problem on my r33 gtr. car is pretty standard with a catback only.
yesterday i drilled out the factory restrictor with a 2mm drillbit which gave me 12 psi boost. goes pretty good and dosent lean out, splutter or carry on.
What i have noticed though if i ease the throttle to about half way and increase my boost pressure past factory boost it it goes straight back to stock boost. even if i put the foot down after that.
But when i switch the car off and start it straight after it will run 12 psi again no problem. This is very strange.
need some expert advice please
thanks
Anthony.