General MAF-T base setting question

[xcelr8n]

OK guys, my MAF-T is set to stock 450cc injectors, but the WOT knob is leaned out to the max, and it needs to be leaner. Should I set the base to 460s or 440s and go from there?
Thank you.

I'd also just like to add this one last thing, my WOT knob is leaned out all the way, is this causing my really low duty cycles on my stock injectors? I mean I'm running 18psi on the 14b, stock fuel aside from a rewire, and I'm only hitting 75% DC's, no knock and 18-20 degrees advanced timing.

I think I could crank it to 20psi and run safely, but that seems really weird to me, to be able to do that on stock fuel, is this because of the "tuning" I've done to it or what.
Thanks

 

[karbon]

Your base should be set to whatever gets both of your fuel trims at idle as close to 100% as they can get, everything else is a correction factor based on your base knob. To answer your question though, yes you can go leaner on the base, and richen everything up except the WOT knob, and it will effectively be like decreasing the WOT knob leaner by one click as far as I understand it. I hope I'm not incorrect.
A 20 degree timing advance with no knock is great, but it could be due to the fact that the ECU is seeing less airflow, so it's allowing timing advance that high. You may have reached the maximum airflow on the 14b though, which is why you're not flowing enough air to max out your injectors. If you had a bigger turbo in there at 18psi, you'd likely be hitting fuel cut. At least that's my theory.

 

[xcelr8n]

The 14b is a short term thing, there will be something bigger going in there along with the rest of my stuff soon hopefully.
My idle trim is like 97% but its usually changing cause the maf-t is crap, but thats besides the point. Theres no harm in toying with shit really as long as I watch the logger for any warning signs.
When I decide I'm bored with the car I will retune it and be happy again for like 2 weeks

 

[1990EclipseGSX]

Yes, if you wanted, you *could* turn the base dial two clicks leaner, which would cause a 10% correction everywhere. This will in fact be like making the WOT 2 clicks leaner, but it will also make you 10% leaner when cruising and idling, since the base setting takes effect everywhere. So, you will probably want to counter the Base change for cruising and idling by making the idle and mid dials two clicks richer.
Will this work? Probably, but your fuel trims will most likely go to shit in the process anyway, since the base primarily affects the Hi trim. Lo and mid trims will still probably be acceptable. Go ahead and give your idea a try, just make sure you remember your previous MAF-T settings in case all goes to hell.

Chris