Subject: Re: tuning questions by djxib on 2013/5/3 15:37:24
Quote:
bam wrote: 3-5" of snow here in the good ole midwest - yuck!! Here is what I have so far; 1)WOT still too rich. Adjusted the PE% Change to Fuel/Air Ratio vs. RPM table back off stock settings, result; WOT is a little less rich but now initial tip in at very low rpm's at part throttle is going very lean. 2)VEMaster is really messed up, I can now read the bin file it creates with C.A.T.S. but all the new numbers in the VE tables are really wacky, all over the place, really strange. I even tried it on another computer with no better results. I have a feeling this will never be figured out?! frustrating. 3)Initial tip in is worse as 1) above but I am thinking that I will go back into PE vs rpm and increase it below 1200 rpm and cut it back some more above that hopefully that help both, we will see.
One extra note, in C.A.T.S. I have adjusted the VE tables in the full graph mode. I could much more easily see peaks and troughs and smooth them out. The VE table is really smooth now and I can really tell it in cruise, the bucking is finally totally gone. nice!
I still could use some help here, any knowing comments appreciated.
Plus checked plugs yesterday engine is not running major lean or rich. All plugs a nice clean, tan color.
Glad you're making progress! I recommend that you dont mess with PE for your low RPM tip-in issue (unless PE is set to come in at 30% throttle, you should check that).
I suspect that as you've cleaned up the VE table it has highlighted an Accel Enrich problem that was maybe being masked by a poor VE before. You can try AE vs Coolant (which is kind of a global modifier on AE) to see if it improves tip-in - you can be fairly aggressive on this table (i.e. multiply the existing number by 1.3) to see if it helps or hinders. AE is very hard to finely tune - I am going to be trying to get mine correct soon and I have bought an Ostrich for real time updates and I will be using dyno time so I can do hundreds of tests under load.
