AFR Learn is at -35% at idle
My "AFR Learn" is maxed at -35% at idle. I know I can change the "max" to a lower value, but this seems odd. I only have about 5-6 miles on the clock since the fitech was installed, so I know I have learning and tuning still to go. I have a lean stumble when getting on the gas which I'll work out once more learning is done. It's pretty responsive otherwise though. And when playing around with higher rpm and loads, the AFR learn and trim seems "normal". All over the place, but +-15%
Here is a 50second warm idle log . P.S. The FiTech temperature reads 10f higher than my gauge.. I have a new sensor on my bench to see if that helps the accuracy.
https://drive.google.com/open?id=14D8zbYWow5if0Pym4e0S_b16owlYEokT
I have a fuel over-pressure problem don't I? My fuel pressure gauge is reading a nice steady 48(ish) psi at idle, with the vac tube attached to the FPR. I'm running a Deatchwerks pump with PWM enabled. 40% at low, 65% at mid, 80% at high.
P.S. Here's a log with just a 40mph romp on some twisty road with a few hits of the throttle
https://drive.google.com/open?id=1vt0CdtOienU8mw0ArwlsBFt0sB3m8NBc
Motor: Ford 302, e303 cam, GT40p heads, dual plane intake, 180F thermostat, 5 speed manual.
FiTech: 30002, Cam #1, no timing control.
Cheers. Shane
Your links are not working. Says they do not exist any longer.
Your fuel pressure should be 58 psi with vacuum line off. Turn up your PWM.
Not sure why those links don't work for you.. they worked for 2 of my co-workers.. ? Oh well.. no bigggie.. here they are on DropBox to
50 second idle https://www.dropbox.com/s/vp3t0s159peio79/DashBoard5.csv?dl=0
short twisty run: https://www.dropbox.com/s/ohodn5m8lxbfrkk/DashBoard3.csv?dl=0
As for the fuel pressure. It makes 58psi with the FPR vac hose disconnected. I was under the impression that FITech says to now leave that vac hose attached? Plus.. it seems to me that too much fuel is my current issue. I also based the 40% PWM on the FiTech manual. Turned it down until the fuel pressure started to drop, then bumpted it up 10%.
You had posted 48 psi earlier. That's why I said what I said. 58psi is perfect. Fuel pressure is fine.
You are not overfueling. For some reason your Learn is hung up at -35 and your Target AFR is hung up also. Even at idle it should move around slightly.
Let's start here. "ECU programmer". I think you need to enable this feature in the display menu. Once enabled, the selection will be at the bottom of your menu list. Run the feature and then turn key off when done. Let ECU power down, turn key on, re-enter your basic settings. Try again.....
Basically you will be reflashing the ECU. May be a bug. Has been common issue lately. Not sure why. The latest Software is very good.
Recommended Grounds: 2ga battery to block, 10ga battery to body, 10ga battery to frame
Recommended Power: Fitech power directly from the battery
These recommendations have never failed me, if done exactly.....
Thanks for suggestions Austin.. I'll do all you describe and get back to you. Also.. yeah.. I did type 48psi for fuel pressure.. my bad.. I was being to vague.
My programmer doesn't have the option you mentioned. In the display setup, only PRO calibration. Version of software shows only Basic. Is this not an option with the 30002?
Yes, you have this option. Look at the bottom of the main screen.