jwt ecu 72lb,z32 maf what setting for AFC?

[wicx]

hi i just bought Nathans JWT ECU with the 72lb program with Z32 mafs( its programmed for both). It runs pig pig rich. I need to lean it out!!! What settings do you all suggest since the ecu is alrady programmed for z32 mafs? Theoretically I was thinking 2in 2out but it didnt work right....any ideas? anybody done this before?thanks in advance.

[S14tat]

i was asking the same thing. no one seems to know. why don't you try 6 in and 6 out?

[Structure240sx]

do u have a wideband? try different settings until u find one that works.

[:: orion ::]

I bet it's a boost leak or some other problem causing it to run rich...JWT usually only runs in the 10-11s for A/Fs...

If it's rich at idle, you have some other problem.

What's the idle vacuum, and have you pressure tested the whole intake/intercooler piping...?

But the AFC should be 5/5 for a stock MAF...since the ECU has been tuned to make the Z32 MAF act like stock, try 5/5.

But I bet the richness isn't from the ECU...

- Brian

[wicx]

Hi,Yes! I have a wideband thats how I am able to tell if its really rich. Well I'll try to check out the other stuff you mentioned to see if I can find any leaks.5 in 5out.. ok ill give that a shot.