Really really wacky fuel issue... this makes no sense.

[SovXietday]

I'm really at a loss for words right now...

Z63bar780cc.skl was yesterday/last nights tune. Partial throttle was pretty on, everything was between 13.5-14.5:1 (24"vac - 3psi). VTEC/Boost was NOT tuned, still in the 12.5-13 range. I was going to address it today. I was however surprised with just how little fuel the car wanted.

This morning I woke up, went to start the car for some more tuning. No go. Didn't fire at all, no matter what I did. After about an hour I quick flipped in the D16 supercharged with 440s in the car, adjusted for my MAP sensor, and fired the car. Started right up, but the values were considerably higher than what as in my MAP... 75-100% higher! :shock:

I just got done another 2 hours of street tuning, back to where I was yesterday. Partial throttle is pretty much together. Z63bar780cc2.skl is todays tune.

It's maybe 10-15 degrees hotter out, otherwise nothing has changed. Granted today's map seems to be a bit more realistic, it doesn't make any sense. I mean, unless someone decided to swap injectors on me last night while I was sleeping there's something seriously fishy going on.

My IAT sensor is just sitting in the engine bay so I have all of the IAT corrections zeroed out. Otherwise I haven't really touched the corrections besides a few tid bits here and there?!

Answers would be nice, I'd rather not get stuck somewhere because the car decided it wants over 100% less fuel again. :(

[Spunkster]

It looks like your first attempt at tuning resulted in some maps that did not have enough fuel. The second attempt looks much better.