Strick

Of course I don't thrash the engine when its cold. The boost pressure rises as normal when the engine is cold but once the engine is warm it will only rise and the fluctuate at the .6 bar

Hey guys, Just recently bought an R34 gtr and have been noticing that when the engine is cold boost pressure is around the 1 - 1.1 bar (thereabouts). After the engine warms to normal operating temperature boost pressure on throttle only rises to between .6 - .7 bar. The only mod the car has is a Japanese exhaust system after the cat and the rest is stock. Any info on what could be causing this would be greatly appreciated