Just recently purchased a 99 stock 9-3...first started to open it up a day or two after i got it all checked out and noticed that my turbo gague was going deep into the red and cutting off, almost felt like i was hitting fuel cut, hope this isnt bad any suggestions as to how to fix this it would be greatly apprecitaed

 

i have seen similar issues on other brands due to an ECU issue...has the car maybe been modified?

 

My car does the same thing. It's a '94 900. I've heard such things as the wastegate, or the boost pressure control valve being dirty