Outer Limits 4x4 Board

This problem he talks of has just happened all of a sudden. so I don't believe it is a tuning issue, but more of a fault somewhere.
once that is sorted and it is running like it was before, then he can fine tune it, untill then he is just burning gas, or in his case, air !!

Does sound lean.
Would be good to go for a drive with a sniffer in it.

I would say no because your timing is changed with boost. Your engine will not be boosting properly if some1 is just sitting their reving the engine compared to when your driving and its under load. well you want to know what timing it has at 3500 rpm, and then you can deduct the amount of retard ...

When you were on the hill and it would not start was the gas tank half empty ?
sounds like the gas pick up is in the wrong spot.
You said timing was 20 deg at idle, what about 3000-3500 eg full advance ? and how much retard per pound.
These things all affect power, and the boost level.