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rwest rwest is online now
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Join Date: Jun 2009
Location: St Paul MN
Posts: 5,492
Garage
I’ve been working on getting my ITBs balanced and Jamie kept telling me that my MAP signal fluctuates a lot and he thinks they still aren’t balanced well, he then asked about how my vacuum lines are plumbed and like many things on this build, certain things trigger something in my pea sized brain and because I insisted on an IAC, my MAP signal only comes off of cylinders 2&5 because the IAC uses the other 4.

So today, I did a temp plumbing re route so MAP is seeing all 6 cylinders and the IAC was disconnected. The car wouldn’t idle worth a darn and was ugly rich, but I was able to use the gas pedal as well as a few tweak of the enrichment settings to keep it running until it warmed up slightly.

It drove pretty well with minimal popping, but it was fairly rich because of seeing all 6 lines made it see other sections of the VE table.
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Rutager West

1977 911S Targa Chocolate Brown
Old 09-12-2022, 04:49 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #338 (permalink)