So I took my R32 GTR out to Wakefield for the first time today. Towards the end of the second session, i shifted down to second and hit the gas, and turbos stopped boosting. The car was running completely fine, idling properly, and running like normal, except there was no boost pressure whatsoever. I can still hear the turbos spooling when revving over 3500 rpm, but again no pressure. A couple of guys came and had a look but couldn't find a problem in the engine bay. I'm not sure where to start looking, what do you guys think?
Cheers!