I just fitted a Hybrid FMIC to my Series II Skyline, Now my problem is my car is now running ridiculous amount on boost roughly 15-20psi when I look at my boost gauge, which I know its un-safe for my stock turbo, when I hit 3,500 revs my car spools to boost then my car starts to jerk so I keep my revs down low, I've only got a FMIC, turbo back exhaust, and af, no boost controller. I'm wondering if anyone esle has this similar problem that could shed some light and tell me whats wrong with my car.