Thanks RYU, 9psi, I've never measured my IAT's. The 4.06 is just what the doctor ordered. Now I can really stretch each gear out and build max boost to match each shift point. Combined with the Giken, the car has a completely different demeanor, much more precise and sorted. It almost feels like launch control only its measured by my right foot. :biggrin:Still one of my favorite builds on here. I'm glad you upgraded wheels (I hated your old ones lol). I think you're going to love the taller 4.06 FD with the SC! Can you remind me what boost psi level you're running? Also, what kind of IATs where you getting last time? (sorry if you had already stated this before)