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Rb20det Idle Fuel ratio varies at idle
Posted: Wed Aug 27, 2008 4:53 pm
by Jonh317
The fuel ratio is varying from 13.5 to 18afr. The coolant temp are constant in the 80's. Sometimes when i come to a idle it will be very lean and then sometimes it will be rich and at times very rough idle bouncing up and down. I have adjusted the fuel map to get it to be around 14-15afr.
z32 maf in blow thru configuration
880 injectors
t3/4 turbo
Posted: Wed Aug 27, 2008 5:27 pm
by kenbam
Whats your latency set at?
Posted: Thu Aug 28, 2008 2:08 am
by Jonh317
I haven't changed it from 1520 with the current rom, the injector opening time and closing time is 1.130 0.998. I don't know what the stock times are so i don't really have any idea where to move it, so i haven't messed with it.
Posted: Thu Aug 28, 2008 2:48 am
by Jonh317
I just did a rough calc from the size of the injectors and 1591 is what i got. I will try it, but it probably wasn't a accurate method. I don't know what the proportion of latency to opening time so i couldn't do a calculation that way.
I also have hks 264/264 8.5 cams which might be adding some problems