i spent blooody ages searching into this as i had the
problem a while ago... i even tried slowing down the sample rate of the lambda probes from 0 milli secs to - 200 milli secs, but evetually the CEL came back!
basically there are not many stage 2 jabba ppl out there compared to revo/apr maps etc which all adjust/turn off the tolerance of the rear lambda probe (for the efficiency part of it) in the stage 2 map.
also just because you have a stage 2 jabba map doesn't mean u will have this
problem, its a slim chance i think. also i think because i have an aggressive map it took it JUST over the tolerance of the lambda probes.
mike said to me he hadn't had this
problem before and he suggested i spaced it out to try and fix this
problem, but otherwise the only other way was for him to put the car back on the RR and find the rear lambda in the map and adjust/turn the tolerance off (which may take a couple of hours!)
EDIT: id email wayne asap IMHO as its getting closer and closer to xmas! (royal snail etc)