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rwest rwest is online now
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Join Date: Jun 2009
Location: St Paul MN
Posts: 5,504
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Jamie sent me a procedure to work on the VE tables RPM ranges one at a time over their MAP ranges. In hindsight, I think Al also mentioned this to me, but at that stage in my understanding, It just didn’t click- sometimes the right information also needs to come at the right time!

So, I went out early enough to find some traffic free roads in farmland, but not so early to disturb the neighborhood- although I have stock exhaust and I don’t think my car is too loud, my driveway also goes right next to the neighbors bedroom window.

The procedure could be called a poor man’s dyno- you set the auto tune setting to be active, then drive the car at each RPM column and slowly add brake while maintaining the RPMs so the computer “sees” the full range of MAP for each RPM so it can adjust each cell.

I also had some good roads in the sense that they were rolling, so I could also get different MAP just from downhill engine loading.

The car does seem to be getting much smoother- I have more work to do, but roads started to get too busy to continue safely.
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Rutager West

1977 911S Targa Chocolate Brown
Old 09-03-2022, 08:31 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #319 (permalink)