[Cloud9...68]

Or possibly a faulty throttle position switch? Checking its operation with an analog voltmeter is quite easy - let me know if you don't know how to do it, and I'll see if I can find the procedure and post it. The voltage should show a smooth and steady sweep as you depress the throttle. It's another of those things that's free, and that I would check before replacing any parts.

Also (and another item on the list I posted), along the lines of fuel delivery, it's quite easy (and also free) to check the fuel flow rate.

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[968norway]

It would be really helpful with the procedure for checking the throttle thing.

Would underfueling at WOT cause detonation/pinging? The knock sensors would retard the timing, which could explain the flat spots.

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