DaveEsCos,
Yep, her baps went down a treat
Do you have any pictures of these baps? And maybe some of the other delicasies on offer?
Karl,
Either way it is the same issue. The compressor wheel is trying to process more air than the engine can consume. When we lift off the throttle the engine still consumes some air BUT a lot less than the compressor wheel is trying to process. As such the air effectively goes back through the compressor wheel giving rise to a noise similar (i.e same but more severe) to normal on boost surge. Both cause turbo stall its just more dramatic when you lift off the throttle but the same phenomena is occuring.
Yeah, i know where were going with that scenario i just think its important to note that witha closed throttle, we dont have enough turbine wheel torque available to create surge, hence the wheel must slow or stop as you obviously well know.
IJust wanted to clarify it for all these folks that will quote us in 9 mths time when weve clean forgotten what was said and why we said it!!
Anyway..
On with that other thing we spoke about now.. will have result for you in 5mins