Just recently acquired a '93 R1, wuz very happy with it until a couple of weeks ago. Started getting a fuel cut @ 6500rpm.
I suspect it's a vacuum leak somewhere. But now, after a short run, I am not getting any pull out of the second turbo. Was taking it out for a joyride and did not push the car past 5500rpm (fuel cuts are bad); @5000 rpm, the car just levels off and I can hear a spinning noise. Is it still a vacuum hose problem or did something really bad happen?