Had a quick search but couldnt find anything, having an odd problem with the car (R32 GTR).
Just had some Tomei Poncams installed and when the car hits 0.75 bar boost it sounds like its misfiring (its not misfire though) and the turbos (hks gt2530's) start to surge (e.g going "woosh woosh woosh woosh woosh woosh").
Anyone know what could possibly cause this problem? The car drives fine around off boost, but as soon as it hits 0.75 bar it runs into the above problem. The car ran 1.5 bar no problems before the cams were installed.
From what I was told the in cam is +4 and ex cam is -2, all the shims were also replaced and valve springs.
If anyone has any ideas what could be causing it, would be appreciated.