Thread: SR20VE best A/F

i just found another culprit, this is maybe the reason why i'm too lean

wrong VQ table.

Try not touching the K value unless your changing MAF's. When you touch the K value your TP scales need to be retuned too. Just use Current Injector size.



What MAF are you running? In the PM you said E60 maf, which is what I selected when I built you that tune (unless the values didn't save after I changed them!)

yes sir, i'm using a E60 MAF, after i change the K-Values about 20percent then the VQ table cross my mind, minus again 20% of Kvalue and change the VQ to e60 my car went down from 17.xx AFR to 15.xx AFR (not yet the normal but close to normal)

15.xx is good enough if you don't plan on running an O2 sensor. If you run with an O2 sensor it will want a closer number so that the difference is smaller.

Weird I will verify the tune I still have at home, maybe it didn't save my E60 maf selection

my problem:

idle w/o a/c = 10.8
idle with a/c= 14.7
WOT= 16-17

if i'll make the idle w/o a/c 14.7 then idle with a/c goes to 16-17 then WOT would be soo lean.

my RPM idle is 750

You have to tune the fuel map, get your idle w/o AC in the 14-15 range. Then change the fuel map to fix the wot issue.

Is there any agreement on what's the ideal WOT A/F ratio for a VE? 12,5 ? 13? 13,5?

What ever AFR makes the best power on your setup without knocking is the agreement.

Exactly what I was looking for!