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lean afr's when holding revs at idle.....
Posted: Tue Apr 03, 2012 2:29 pm
by meet07
Noticed that when I hold revs at idle the afr's are really lean. Like around 18-20 lean. What can I adjusted to correct this?
setup:
rb25 series 1
-z32 repinned board
-forged bottom end
-q45 tb
-stec manifold
-BW s366
-ford lightning maf blow trough
-3 inch ic piping
-freddy intake manifold
Re: lean afr's when holding revs at idle.....
Posted: Tue Apr 03, 2012 2:49 pm
by Matt
Check latency which will affect lower rpms, fuel map and you can pull ttpmin values higher if both those ok
Re: lean afr's when holding revs at idle.....
Posted: Tue Apr 17, 2012 9:54 am
by meet07
So I would need to increase the latency correct? And I tryed to tamper with the ttpmin but it didnt change anything..Ill try both here in a little bit. When the engine is cold and I hold the rev's the AFR's look good...
Thanks
Re: lean afr's when holding revs at idle.....
Posted: Sat May 12, 2012 12:59 pm
by meet07
I adjusted the ttpmin but rom 7-8 there is a drastic change in the afr's. 7 is at 18afrs and 8 is at like 12-11.0 afr's
Re: lean afr's when holding revs at idle.....
Posted: Sat May 12, 2012 2:38 pm
by Danielmcn
Did you adjust the latency at all?
Re: lean afr's when holding revs at idle.....
Posted: Sun May 13, 2012 7:44 pm
by bachig24u
make sure ECU is in open loop if possible.