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Old 09-12-2023, 11:56 AM   #128
radz28
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09/12/23 - Supplemental Follow-Up to Final Report:

After continuing to polish (as I said I was going to), I'm still confirming [17071] seems to be the table that really completes this method, as far as I can see (from all of the SCANNER data I'm capturing/reviewing). But - I don't think I mentioned that among the things you might have to consider is VVE-tuning. While - I maintain that should have already been optimized, it occurred to me that after a pulley update, some parts of the VVE-tuning might be compromised. This might already make sense to others, but I haven't noticed anyone say anything so far, so I wanted to make a little supplemental comment.

I'm still looking into this, but I feel like my regular SCANNER GRAPHS, in CLOSED LOOP (CL), don't work like they used to. They are considerably off, after adding the smaller pulley. After reviewing SCANNER data from before the pulley, my VVE seemed (essentially) the same as before the PI (on the 90mm upper that I've been using this whole time). Now - after the 82mm upper, my VVE, in CL, is all wonky. I panicked a little at first, but realized that the changes in [17071], as far as I understand, altered the FUEL MODEL. This is my current logic, because all my OPEN LOOP (OL) readings, before the PI, make sense (obviously, though, need a little work because of the extra boost), and those parts of the VVE table are not all crazy and way out of whack. I'm validating my theory, because my MAF/VVE/DYN_Af all line-up, as good as they had before, through all of my STEADY STATE scanning. So - since this is what we're actually tuning the AIRFLOW MODEL to (as far as the conventional wisdom I've read), and my model is still all lining up together, I an convinced the changes I made to the FUELING MODEL for the PORT INJECTION are what has thrown off my CLOSED LOOP VVE. As stated - my SCANNER GRAPH continues to show MAF/VVE/DYN_Af lines are well within 5% at all times.

So - for anyone who's messed with the FUEL MODEL, be prepared (as far as I can understand) to know that the old SCANNER GRAPHS/FILTERS could be off in CL. I hadn't thought about this before, but after seeing it now, I get it. If I'm wrong, I'd like to know, and correct the post. I am all ears. Fury's running better than ever.
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