Hypermiling habits to blame for DBW throttle weirdness?

[slurp812]

Originally Posted by theholycow

Thanks for the response. That's definitely not the issue, it's only got 8,000 miles on it.

It doesn't stall or slow, it just fails to accelerate.

Drive by wire, 8000 miles huh? The only thing I can think of would be to reset the ECU...

[theholycow]

Actually, I finally figured it out, once I observed the conditions better and reproduced it more accurately. I got the timing pretty perfect and realized that it's preventing >3000rpm on startup; if I just let the tach rise then fall a few hundred RPM then it's all better. So, my procedure is this:
Normal bump start
Accelerate to 3000 rpm fuel cut
Let off the gas and on the clutch for a few seconds until it revs down to 2700rpm (thanks, rev hang)
Resume driving without further difficulty