Bad AFR at low boost, correct at full

sylquebec

sylquebec

New Member
Mar 23, 2008
167
0
0
Quebec
Ok, i change my aeromotive AFPR today. The system now retain pressure for a lot of time after shut off. It was still at the same pressure (38) after 2-3 min.
but my low boost AFR was still at the same lean level. So i decide to reinitialize my APEXI NEO. That resolves my problem. Its running correct at low boost. But it is now pig rich at 16psi. So the question is : how the hell do you set a SAFC or NEO for both low and high boost if its doesnt require the same level of adjustement???
I have the 560cc and lexus maf for those who dont know. setting on my neo was from -5 at 2500 rpm to -25 at 6000 rpm ( gradually)
 
mk3_7m

mk3_7m

Member
Jul 21, 2007
536
0
16
melbourne
sylquebec;1856996 said:
Ok so i do more test and i still have that problem.
I tune my NEO to 11.0 AFR for Hi throttle setting. I boost to 16 PSI with a good AFR.
But when i put the boost controller to the minimum, it still super lean. So much lean than when i'm in 4 gear on the highway and i WOT at low boost i see - - on my AEM wideband. Like more lean than the gauge could read. A little scarry... I try upping the fuel pressure but my next step will be to change the AFPR like IJ says...
Click to expand...

If you are using the Afc neo to tune dont know if u know about the bug, but if your afc neo ver. is v1.104 below you should send it back for a reflash if you havent done so already? hopefully this will fix ur issue. http://www.3si.org/forum/f1/apex-afc-neo-confirmed-programming-bug-karman-function-doesnt-work-419786/
 
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