Feel free to PM me with your email as I have experience in tuning these engines I can give you decent idea of ignition needed at idle, PT and WOT as for fuel just target 12.8 across the board for now, that AFR should run just fine.
But using MAP based tune on ITBs may not work so well, do you have the option to use TPS? or a combo of TPS and MAP?
The very best would be to build a air tight plenum on top of those ITBs then a horn off the plenum with a 3" MAF
and use true MAF for metering air very accurately.
Something like this can easily have MAF sensor adapted to it.
https://www.fvd.net/us-en/FVD11096405/rsr-style-individual-throttle-body-kit-964-993-magnesium-for-mass-air-flow-sensor-street.html
Here's example of itbs with MAF, not a 911 engine but to give you the basic idea
https://myndasafn.bmwkraftur.is/d/46292-1/airbox+_Large_.jpg
Quote:
Originally Posted by dannichols1474
Thank you scarceller for the tip above and also about the tuning books by Banish. You gave me the book recommendation on this thread about a year ago, so I already have "Engine Management Advanced Tuning" on my bookshelf and I will be referring to it shortly...
Today, I finally got the car out on the road for a short, 10 mile test drive. The engine definitely needs tuning - I can tell it wants more fuel and more timing. The character of this engine is definitely different from the previous engine, but I am thankful and relieved for it just to be running. Now, I change the oil, stare at the AFR and timing tables and make changes so I can be ready for the next tuning / test drive....
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