deathbyc4

Aight, most of you know i rebuilt my engine recently and went well except my car running lean at idle and 14.7- high 13's when over 1000 rpms and up.

440cc
safc-ii
dezod black box (which is set to all 10's aka no correction)
9:1 pistons

the current tune was great for the stock piston compression but i havent the slightest clue how to compensate for the compression decrease. i figured it would need less fuel but acts as if it needs more? i've tried higher fuel pressure and less injector correction and multiple different ways but no success.

Any ideas guys? Thank ya!

BTW, it'll get retuned once i get the turbo kit back on, i just want to figure this idle thing out so i dont run into the issue when i get it on the dyno.

cburglb34

cant tune idle much with the safc ..

deathbyc4

that i can understand from the ecu side of it but then why does it run at 16 a/f even when i turn the fuel pressure up?? its annoying.

Ace83

iTrader: (6)

maybe its pulling fuel for some reason, your ems is the one giving you problem.. and that should be the only side of it, insufficient fuel and ignition control poor tune.. ems is your major player

cburglb34

your ecu is trimming out fuel...its doing this for various reason that i am not aware of since idk wats goin on datalogging wise.. i really reccomend u switch out the safc for something that can tune all around and can advance or most importantly retard timing

deathbyc4

im waiting on taxes to fund a standalone but for the mean time i guess ill let it run as is since its fine in the higher rpms.