I know nothing with regards to boost, so I am just throwing this out there.
I did not see any mention of securing the engine/trans in the car. It is my opinion, as you get into these higher HP/TQ numbers that the engine torque puts a ton of pull on the drivers side engine mount and can focus too much pressure on the side of the block at that point and cause unwanted flexing/stress on the block which can inturn cause distortions and out the window go your internal clearances and cause problems.
Would it make sense to suggest an engine/transmission plate to secure the engine to the frame? Or is this a given at these HP/TQ levels?
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