Man I'm glad that you responded with your insight. Thank you so much!
I think that my AFR is actually leaner than what was stock. At least for the bin that I started with which I will post. It's a 350 4L80 bin.
Yes, good point about the fluctuating map causing AE during cranking and startup, I had not even thought of that.
I'm not sure why, but I have chased my tail with the IAC counts. The last time I set it with a fully warmed engine it was around 20 or so counts on the scanner..... I was shooting for 10 counts but I either coulnd't get it that low or it would go to 0 or near 0, or maybe 1, 2 counts IAC... Maybe that's what I ought to shoot for here?
Your 355 having a single plane intake is likely very similar to mine I have here, even though I'm $0E and you're $0D.....
The engine I have is a 355 with flattop pistons (no idea what the compression ratio is, I need to figure that out but I'm thinking about 9.5:1 maybe??) Lunati 20080660 cam, Weiand 7547 single plane intake, Summit SUM-162108 62cc chamber heads, long tube headers and a Holley 670 CFM throttle body running a Marine 28 PSI FPR spring and 61 PPH injectors.
Would you mind sharing your tune so that I can look at it?
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