Little update:
Took the old motor apart. The rod snapped just below the piston pin.
I am now running the new 2018 Nismo engine. It feels like a smoother engine, it had just 9k miles on it when i bought it.
Some things that have changed for me:
1) i have no more knock in low rpm like <4000 like i had with the old engine
2) my tune now has a boost ramp up to reduce torque in lower rpm's. I have 6 psi till 4500 and after that it ramps up to my desired psi level (9 or 12).
Took the car to the dyno last weekend, its a german Dynokraft (similar to US Mustang dyno). I hit 580whp on E70 and with 12.5 psi boost. Happy with the outcome and trying to keep it in one piece now :-)
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