Added to that, factory knock control like late evo, only detect knock when the pistons are at a certain range of position in the cycle to further increase the accuracy
Not trying to sound like a douche, but maybe the tuner you were "arguing" with though you were wasting his time, as obvoiusly you arent the sort of client that wants to spend the sort of money for those results. Just remember there was a Honda F1 1.5L making 1400hp
What was the situation when it happened. A gtst with an rb30 i built went into flood water at about 2000rpm with a front mount. The water stalled the motor by flooding it with fuel, as the water hit the AFM first and no damage was done to the motor.
So i guess it is safe to assume under vacuum, the motor is sucking fuel vapour from the charcoal canister into the motor causing a momentary rich pop. Sounds like its working as intended. IMO it seems most skylines do this and its only with a big exhaust you notice it.
Wouldnt it be easier to swap the sumps, then you dont have to reshim the diff to get the clearances right.
As far as turbo choice, a gt30 doesnt need an external gate, as long as you get a genuine garrett exhaust housing, the internal gate is fine.
Happy to be corrected, but if they dont have markings, then they can ge either way. Im certain the tongues are there to assist assembly, crush holds the bearing
Unless they have piston squirtes on the side of the rod
Ill take the egt gauge, or 2 if you still have 2. Coming through valley heights tomorrow about 7.30 am, 7ish pm or 9.30 monday, whatever suits. Can you sms 0423 328 738