S5 TII quick experiment - help needed

[WankelsRevenge]

So I tried this on the "other" forum... didn't turn out so well.

Background:
I've been getting more and more involved with MegaSquirt2. Like most others, I'm using the stock BAC to control idle speed. The operating frequency (think carrier wave) of the BAC has only been speculated on - unlike the FD, the FC's workshop manual makes no mention of this spec.

Progress so far:
Today I tested WankelRevenge's BAC - but he has an N/A. Cant remember s4 or s5.

What I need:
Anyone with and S4 or S5 TII to validate what I found today... or add to the knowledge base.

How to help:
Start the car, allow it to warm up. Disconnect the BAC harness from the valve. Use a multimeter capable of reading frequency... not all of them can, but even some of the cheaper ones can. Insert the (usually red) probe into the harness and allow the reading to settle out - only 1 of the 2 wires in the harness will give you a good number - the other should just be a ground. Report back!

[ElTeeFauci]

So I tried this on the "other" forum... didn't turn out so well.

Background:
I've been getting more and more involved with MegaSquirt2. Like most others, I'm using the stock BAC to control idle speed. The operating frequency (think carrier wave) of the BAC has only been speculated on - unlike the FD, the FC's workshop manual makes no mention of this spec.

Progress so far:
Today I tested WankelRevenge's BAC - but he has an N/A. Cant remember s4 or s5.

What I need:
Anyone with and S4 or S5 TII to validate what I found today... or add to the knowledge base.

How to help:
Start the car, allow it to warm up. Disconnect the BAC harness from the valve. Use a multimeter capable of reading frequency... not all of them can, but even some of the cheaper ones can. Insert the (usually red) probe into the harness and allow the reading to settle out - only 1 of the 2 wires in the harness will give you a good number - the other should just be a ground. Report back!