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I posted between your pics.

I'm using the 3.2 idle valve. I see you're using PWM on the idle valve.

That might be your problem!

With the 3.2, you can use "FIdle", which "closes" the valve (not fully) as the engine warms. There isn't fluctuation during steady head temps. Once "closed" (if you will), it doesn't "open" rapidly to prevent the engine from stalling at idle.

Not sure how PWM idle valves work?

You can see in your datalogs. Does the idle valve open and close rapidly during these oscillations????

Hi Tippy

So for the idle valve I should have it set to on/off? I don't have Fidel as an option. The valve I am using is a Bosch 3 wire unit. I think it came off a BMW.

I will give this a try.

Thanks

J

Hi Tippy

Toothed wheel was only option that would allow Dual Wheel with missing tooth.
I will try AFRs mid 13s up to 2500 rpm.

Thanks again.

J

Think of it like this (got this from jpnovak, and he's spot on), in low RPM's, running richer won't use 'that' much more additional fuel, while making lean tip in less of an issue plus (in batch firing cars) smoother running.

Turn it off (idle valve) completely and set idle by screws on ITB's just to see if oscillation is from the idle valve rapidly opening/closing.

But, you should see this in the datalogs.

How do Ignition Maps look keeping in mind I am twin plugged?

IMO, the boost areas are a little high. Everywhere looks pretty decent.

Should I reduce by 10%?

Looking good John.

Thanks Mark, let me know if you are interested in my SDS EFI at all? I will cut you a great deal.

I still have to get mine up and running on webers and Phillip's twin plug dizzy...so close...it's in, only need a couple of bits.
If I don't like the webers I'll definitely give you a call, but I can't swing it right now.

SmileWavy

3-wire idle valve should be a PWM controlled valve, not on/off.

Sounds pretty good, especially in the peak torque RPM band where detonation is mostly likely will occur.

In that RPM band, pulling a couple of degrees will give it some safety margin.

"GJF" is a tuner and knows these twin-plugs well. Maybe PM him with ignition table?

Still having issues with car stalling if I hit the gas to quickly. Wondered if it was the crank sensor.
I have tried to save a Composite Log. It would show for first 5 secs. Then disappear. I'm thinking I need to change laptops.