fuel trim tuning

[Yves]

Is it necessary to have your main fuel table fully tuned before you start tuning the fuel trims ?

[nathaninwa]

Which fuel trims are you speaking of?

[Yves]

As you can find them in the fuel tab in TS.

[racerron]

Is it necessary to have your main fuel table fully tuned before you start tuning the fuel trims ?

i would have to say yes. but than again you may have to fine tune the ve table a little.

[nathaninwa]

I see, Individual cylinder trims. I'd get the tune close and adjust as needed. The overall afr should change along with ego correction, then I'd do another round of veal and repeat

Are you using egt or wieeband? I'd first swap sensors with an adjacent cylinder and make sure the trend stays the same as previous

[Yves]

Hm, have been trying things with my 8 WB setup yesterday for the first time. Only at idle. The differences in AFR between cyls are rather big. For instance I can clearly see that the first cyl after the intake tube sees the least amount of air. I will have to review my airbox.

Engine idle stability greatly improves.