Lean spikes

[hquick]

Hi all,
well, I've nearly got my VE table sorted. One thing I have happening is whilst logging, if I get off the pedal altogether when slowing down (as recommended) and then get back on the pedal, I get a lean spike?
Any idea's on how to get rid of this?

[hquick]

Is it anything to do with the throttle cracker?

[shallow bay]

The actual WBO2 sensor could be the problem.

http://forum.efilive.com/showpost.php?p=48317&postcount=2

[hquick]

I don't think so. Firstly because the WBO2 is basically brand new and scondly as it's not prolonged...it's only a very quick spike.
Here you can see it in the columns around the 2400rpm mark.