lambda trim odd & even - allowable offset

[Chimp871]

I've reset engine idle and plugged in rovergauge to check it's target v actual RPM which it is ok.

But I noticed that the lambda trim on the EVEN bank was higher than the ODD bank, averaging 30% (min 0% to 200%).

Is this normal/acceptable?

Like to get an idea before I switch over the sensors to see if the EVEN lambda repeats it's higher value trend.

[blitzracing]

What are long term trims doing? This is the value set as the base line for the short term- so ideally if you see the short term trim always moving on one side of the mid point, the long term should move until the short term starts to cycle plus and minus again. You may just need to let the car idle when hot for over 2.5 mins to get the long term trim right again.The two sides do fuel slightly differently as air comes in from one side in the plenum, so the trim values will be different- thats quite normal.

[Chimp871]

Thanks for info Mark.

Long term trim is around 0 on both.

Was thinking the short trim values between odd and even should be similar otherwise possible over fuelling but if its normal I'll take your advice and put it to bed.