New log on efi rich at idle and bogging under open throttle
A lot going on there. Let's start with a 30 second idle datalog at operating temperature.
Austin
Here is an Idle log at op temp
It still runs REALLY rich. Miracle I did not die with running at idle even with the garage door open 😉
https://www.dropbox.com/s/4hmxgwfi4y2ah0l/Idle%20Control2.csv?dl=0
Yeah, I can see immediately that your IAC steps hit zero, which should never happen. You need first to turn your idle screw out to lower rpm and bring your IAC steps up to about 10 if mild cam, or 20 with radical cam.
Quote from bdhulderman on October 18, 2019, 10:30 pmYeah, I can see immediately that your IAC steps hit zero, which should never happen. You need first to turn your idle screw out to lower rpm and bring your IAC steps up to about 10 if mild cam, or 20 with radical cam.
Ok cool will do in the AM. Just got back from a HS football game.....THANKS for the tip. This has got be run better than this.
WHen I lower the idle with the screw....what do I set the idle rpm to on the controller...….
That's the nice thing about EFI, as soon as you turn the screw out a tiny bit at a time, the fitech will still try to match your entered target rpm automatically. As long as you are turning it out, you don't need to turn off the car after every time you make an adjustment. If you go too far (high) in IAC steps, then you will need to turn it in a tiny bit, shut off your car, wait a minute, fire it back up and view IAC. This is to get your TPS back to a zero reading. Of course, all of these updates need to be done with the engine fully warmed up > 170 deg.
Which screw....there are two of them on the thrt body
Start with the primaries, the one that opens first from the throttle linkage. I've heard of people doing both a little at the same time. Ideally you want the primary butterflies and the secondary butterflies opened the same amount at idle.