hi all this is my first day on this website and in my nissan 200sx s13. the car has a hks super dragger exhaust, t28 ball bareing turbo, induction kit. i was driving up the road earlyer and when i had reached third gaer i lost all boost from the turbo the boost gauge was reading minus presseure even when i put my foot down. any ideas lads any help will be most appriciated. thanks jamie