Are you seeing any oil in your CCV line with the Mishimoto kit? I'm not sure how but I suspect the Mishi is flawed and the real issue is indeed the the CCV line. It's either that or oil coming directly from the turbo..
I can attest, ride height makes a sizable difference.. with the HKS springs bottomed-out the effect is amplified and feels very uneasy when going over bumps at speed.
This because fueling becomes an issue on the low pressure side when running port injection. The thread below talks all about it.
https://www.supramkv.com/threads/lg-a90-supra-auxiliary-fuel-pump-kit.5381/
I'm happy with how loud mine is so maybe upgrading the DP makes a noticeable difference? One thing to note: the sound will change after you put some miles on them.. Also have you tried out the straight through pipes? Would like to hear your opinion if/ when you do.
Nice! I had a similar Sunday except I butted into the group. At one point a Ford GT was behind me for a couple segments.. said he had a tough time keeping up.:headbang:
In a group full of exotics I think I had the cheapest car there.