My '89 Golf, 1.8 8v with Digi Injection, shutters/bucks, just after the the throttle is opening...in gear, during acceleration. The only way I can drive it is by being real, real easy, appling the peddle, to gain RPM's. To try to rev up for a fast start, or just wide open throttle, it runs real rough. I've got a new air filter on. Thanks!