Strange Issue on Full Boost
I've got a really weird issue with the Escort which is intermittent and only when on full boost.
No misfire or fuel problem at 1 or 1.5 bar car runs sweet, then I turn the boost up to 2.2 bar and I get a Grrrrrr when on boost.
Changed plugs two different makes, had the engine looked at inside with a camera etc no problems. Yet I can go out on the roads and it runs fine on full boost go to a track and it making that Grrrrrr sound and down on power.
Fuel Pressure
Injectors
Wiring
It only seems to happen on track
Any ideas??
Cheers, Warren