was driving the skyline home last night and when i put the foot down, it just started to stutter an miss. i dont think it is a boost pipe as the turbo seems to be boosting ok and is making all the right noises etc. there had been a problem for a coupl eof days with the actuator coming and going. and theres also a hole in the exhaust manifold gasket. obviously ive to go and change the actuator and manifold gasket but does anyone have and ideas what else could be the problem??