Yeah base timing is at 15BTDC. I mentioned 40degrees to my mechanic and he was like that's pretty high.. he said take some base timing out of it which will be pretty gay off boost.
I'm moving through trying to eliminate things, so far done the plugs, fuel filter and changed AFM's. Next on my list is fuel pump and CAS aswell as try another ECU.
Cheers guys, keep the ideas coming
Can the timing belt stretch when it get old and result in this sort of pinging? it pings pretty bad if I give it more than say 10% throttle when at normal operating temperature.
Also, a tiny misfire has developed over the last few weeks. Not consistant and not repeatable, just does it randomly and usually at low revs getting on the throttle a bit, doesn't miss under load (happens maybe once a week).