Bates

Is this the correct chain of events when you run out any gear?
- boost begins to build around 3,000 rpm (approx)
- max boost reached at 4,500 rpm (approx), wastegates open to prevent further boost pressure being achieved
- revlimiter cuts in at 6,500 rpm (approx), engine is starved for fuel

Macster

That's close enough.

IIRC boost shows up at below 3K maybe closer to 2K but does taper off at over 4K. Say if the boost reaches its nominal max. of 0.7 bar (non S model) boost will drop to half that at some point in the upper rev range.

Fuel and spark are both cut if the redline is reached. It is not nice to run a turbo engine lean.

I sort of remember there is a soft red line in which timing is manipulated before the hard red line limit is reached but I can't recall now where I came across this and do not have time to dig for the reference to confirm.

But you have it essentially right.

Kevin

The rate of Boost building depends on load(flat, hill, downhill) and throttle position.

Stock REV limit is 6750