Ok, good.
Can you account for the difference in AFR from 14.55 to 13.30...?
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I wil start to fiddle with the VVE around the idle area and see if that improves it if not I will start to look elsewhere. I'm fairly certain I should get it in the VE as when revs change from AC on to AC off the AFR moves around so my thinking was there is some differences in VE at this MAP and RPM points
adjusted the VVE based on the BEN MAP for the IDLE area and nothing changed with W02 AFR so not sure if I'm adjusting the VVE right or the W02 is displaying a false reading. Once I multiply with the figures from my BEN map I generate coefs and then generate VVE is this correct?
At idle, if cam has sufficient overlap, you may get unburnt fuel/oxygen passing into exhaust, this registers lean on wideband, and when you correct for this in VE/VVE it seems to make no difference.
Yes. correct.Quote:
Once I multiply with the figures from my BEN map I generate coefs and then generate VVE is this correct?
Standard cam so overlap won't be an issue, I'm showing rich at idle so I guess I just need to keep dialling in the VVE in this area until it's the same as commanded.
I also have a odd start issue where it starts and then split second it stumbles the just idles perfect.
Also what is the difference between the VVE OPEN and the VVE CLOSED?
IMTV = intake manifold tuning valve (i.e. intake manifold variable length runners)
open and closed are the two positions (open = long runner, closed = short runner, unless I got them vice-versa)
if engine is not fitted with IMTV then use the IMTV Open VVE tables.