I lowered the compression about a point to be able to use more boost and also like you said I picked pistons that are very detonation resistance with a design that has a much faster and more consistent flame front.
Also tried out total seal's gapless rings to eliminate blowby (for the most part).
Mostly did the work because I wanted to refine the engine a bit more, the VVT system was working a little too well (making the cam too small down low) so I adjusted the engine so it has more TQ output below 3k.
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