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Originally Posted by jlaudio11
Digging deeper into the logs, I'm seeing a few abnormalities. Last time the car was out, it was on fresh pump E and 82%, this time the fuel had been sitting in the car for over a week, we've had a lot of up and down weather temps and I'm wondering if the E absorbed some moisture or something. My E content was down to 73% and I thought it was higher than that, when I filled it up. This trip to the track I actually had misfires reporting, that I didn't feel. Last time out compared to this time, commanded never moved like it did this time. I'm not sure what it all means, just sharing.
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I get more missing on high E', at idle, with these NGK 6510s. I figured it was just these plugs, since the misses go away after warm-up. I'm also running as wide a gap as I can - like .040 I think.
Quote:
Originally Posted by Megahurtz
So it depends on if you're using the closed loop feature or not with the Too High PSI system.
If you are not, and fueling is off due to weather change, then your MAF curve needs to be adjusted to make up for the additional airflow in cooler weather. Cooler weather means the blower moves more air and your fuel demand goes up. Also, if the port system cannot account for ethanol content then its going to spray a fixed volume in open loop mode. If the E content changes vs what it was tuned on, your final Lambda will be different as well.
If you are using the closed loop capability of the port system, it should try to maintain a target with the port injectors regardless of what the DI system does. In this instance you would set your MAF curve to keep the Injectors in the safe range regardless of weather and rely on the port system to adjust for more airmass in cooler weather.
In regards to Virtual Torque, this may or may not need to be adjusted. Depends how much the port system is taking a load off of the DI side.
VVE is also a maybe. It is pretty much ignored at WOT steady state but it does play into some torque calc stuff. Usually there isn't much need to adjust VVE for Meth or Port Injection. Meaning, just because you run either, it doesn't mean you have to adjust the VVE. But you may have other reasons it needs changing such as heads, cam or an aggressive blower setup.
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I switch back-and-forth, but have left the CL on, to just keep me safe. I thought this controller sees the alcohol, too, but I'm probably mistaken. You'd know better than I. I was under the assumption that it did compensate (through the CAN), since there's a table for it, and MOTIV offers an alcohol sensor. Hmm... Regardless - I run in CL most of the time, when I'm not actively tuning, sometimes, anyways.
Yeah. The CL is nice, and is configurable to report EQ correction, which is nice. It seems to work well though.
SWEET!!! Thanks for commenting on the rest. It seems like I might be fine where I am for that stuff. Thank you, sir!