This car just doesnt want to see the dyno. I finally got all the loose ends together to get the car back up to bison performance for some dyno tuning and while cruising no boost i heard a slight noise equivalent to dropping a hose clamp on concrete then smoke screen. Car also sputters as if its missing. Ive searched quite a few posts about smoking a turbo while in boost or blowing a head gasket while in boost but just cruising im kind of scratching my head. car is .30 over, gn1 heads, 70 mm turbonetics, 80lb injectors, xfi. Thanks for your time.