My tuner has tuned me and 2 others that had previous tuners. He also has tuned many from OEM. He prefers a rich car with timing. I picked up a lot vs my first tuner and AFR down to low 12's. I might even hit 11. Gotta find the sheet.
PS, you said your buddy said you where rich but then said bring it down to mid 12's. I'm confused. If you are rich you're already down. Did you mean up? Like right now are you rich at 12.0 but he wants 12.5? I wouldn't go higher than 12.5! But 12-12.5 should be a nice spot. For NOS I have no idea about the AFR. My old kits just worked it out for me.
__________________
13 370z-
|