fitted some new injectors and all scaled in with trims pretty nice.
cold starts and general running are as norm.
but after a spirited drive and then coming to a stop the revs go low 700 ish and it gets real lean before recovering after 30-60secs of idle! ????

 

Few questions Lee, are you on SD or MAF, what injectors are they, what is the O2 sensor doing at this point, and has it gone back ito closed loop?

 

Hi Gray, MAF,RC 1000's, hmmmm O2 was inconsistant from memory , have to check.
will get some log info

 

is it normal for O2 to change from the fast switching (which i would expect to see) to a prolonged high followed by a prolonged low then back to normal fast switching?
the yellow is the O2. as it goes low the engine gets very lean (wideband 20+'s)
.

 

Not usual to see the O2 sensor hold both extremes for so long, did you determine if it was in open/closed loop when this was happening?