Yes I think you are right. I cranked up the enrichments in an effort to get good starting behavior and there's little doubt I overdid it.
But, I've been getting erratic readings from my LC-1, it was hanging at 7.5 afr yesterday. So after recalibration, wiring checks, restarts etc I ordered a new gage (MTX-AL) and it should be here in a few days. Bit of sticker shock but I'd been saving my pennies.
I didn't have much guidance on the afr settings so that map is pretty much a guesstimation on my part, as is the VE map. Oddly enough it runs pretty well except for startup behavior and being overly rich, at least at points in the tune including WOT, start and warmup. I'd like to get it leaned out but I'm willing to wait for the new gage to do it since it'll be rather pointless otherwise, but I can begin paring down the enrichments bit by bit. Interesting that uptick at the end of your curve. I suppose that must help?
I really haven't used the afr map to tune with before now and don't really understand how it is used. The map seem arbitrary aside from just a few data points like cruise, idle, and WOT, and even those really are a range rather than a set number. I'm having a little trouble understanding how that is much better than just tuning the VE map while driving and watching the afr gage (With a co-driver of course. Well, I guess it does let you eliminate the co-driver). So, learning new things. That's always fun.
Jim
Do you know of a really good thread on tuning using the AFR map and the autotune feature?
David, I loaded your curve and it works at least as well as what I had before, maybe a bit better and it is leaner so that's an improvement. What are you using for taper?
So then I guess you are basically just guessing about either the best AFR or else the best VE values. I've always just skipped the middle man and edited the VE map directly based on what the WB and the engine was doing. I never saw the effort of dreaming up hopefully ballpark values for the afr as being an advantage. I've done that now anyway, but I'm seeing that you have to exclude areas like idle from autotune and I wonder where the payoff is?
Well, back to work. My MAT sensor came in so I should hook that up.
alrighty that's done. There wasn't a definition for the AEM but it was close to the GM so I just kept the GM resistor value and tweaked the calibration values to match the AEM chart. (It listed 2 resistor values, one was the same as the GM) Seems to work, I was showing 102 ECT and 103 MAT. Hopefully more parts will be in tomorrow.
I found advice on cranking speed and changed that, it seems to start OK at 250 and then does not die which is helpful. Maybe I can even lower the idle speed, but I've got an oscillation I have to get rid of first.
Looking at the latest datalogs (ran a bunch of them today), I have completely turned off the prime pulse and ASE and the car still starts fine. However I have picked up that oscillation.
Also, despite the fact that I have just recently replaced the TPS I'm seeing a lot of spikes on that line. I don't know if that's normal, but when I ran a datalog with it unplugged they went away. (also attached)
Here's another. The pw is 11.4 steady but the engine speed drops from 3400 to 296 then it dies. Still trying to figure out why. Cranking speed was at 250, lowering it to 200 since actual is 135.