ah, it may be the ecu - should it do this ??

Cant remember exactly what the rolling road operator said now, but from memory it was something to the effect of he originally suspected the lamba sensor which appeared to not be switching over unill it reached about 3000rpm. (wether that be on or off I didn't ask ), but on boost the fueling was correct and not running rich like it does at Idle. Ie its not rich all the way up the rev range.

Have I explained that properly ??!!??.as i say my memory is a bit vauge now.

If you guys know of anything I can check please help me !!!