MicroSquirt.com read only forum (Jan.15,2018)

You want to wiring exact as per that diagram you already see.

The relay needed is not supplied on the relay board.

Pick up a new relay, and wire the power/ground as pictured. The connection on the relay to pin #26 supplys 5volts. We use this source because 5 volts is hard to find anywhere else. I ...

Yes, I see the same thing from time to time. And its very inconsistent, so its hard to troubleshoot.

I'll start the car and the idle will stay high, and the iac won't begin to close at all. Turn off, and immediately re-start, will fix the problem. Still following threads for that perfect solution.

Yes its easier to answer some questions after reading what Lance has to say. I've learned a bunch from hours of reading his docs and posts.

Looks to me like the lower load is actually in the opposite direction, along the top. I am not really sure what I'm looking at though. Its hard for me to relate the number along the top to an actual map reading megatune expects.

Yes that seems reasonable.

Lower map values tend to indicate leaner conditions. Leaner conditions require longer burn times - hence the need for more advance. Spark sooner, burn longer.

Most people only think about rpm advance. eg 3000 rpm 36 degrees advance at WOT. But at crusing speeds on the ...

I think I can answer your questions.

The colour are just the scheme to represent values, eg 0-10 degrees is green, while a value of 50-60 degrees is red.

The 10 degrees your set at 'idle', should really be called your base timing. Actually your idle timing value will depend at which rpm/map value ...

Thank you this is a great help. I am using Excel 2002, and it works fine.

Check here, you want the MSII daughtercard. It replaces the MSI chip.

http://www.diyautotune.com/catalog/mega ... -p-86.html - worth $90 IMO just for the IAC control, let alone all the other features and improvments.

Good luck.

Philip,

the 1980 has the pre-HE engine does it not? I am interested in your table should I ever get around to doing my v12, but it is the HE engine. I know the compression on the HE engine is 11:1.

Many thanks.

Philip,

have you read through this post yet? http://www.msefi.com/viewtopic.php?t=99 ... sc&start=0

Lance has made some good suggestions for advance timing under vacuum conditions. Its worth the read.

We Jag lovers gotta look out for each other =)