just saw an ad from A/C Spruce regarding Surefly Electronic Ignition. Replace one mag for about 1400$. Option allows for use of an advance curve with Manifold pressure reference. Anyone try on their or others O-200? Seems great for fuel injection but carb?  I had WW type electronic Ignition on my plane when flown with Corvair engine,  and it sure did enhance start-up

just starting some discussion

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I have 2.5 hours on my single P-Mag on my O-200

i still have one magneto, which I’ll change out to a second electronic ignition eventually.

I’m seeing similar results as yours. 
I may get a surefly instead of another a Pmag as the Surefly is about $400 less.

I like the Pmag because it has a built in alternator to power it once started.
so far so good.


Hi Chris

what was the problem with the ACS harness?

I’m using one with a slick mag for a few years no problem. 
if I switch to a Surefly  mag I wouldn’t want to buy a new harness.


This has turned out to be a great investment, I see improvement down low at 1000' agl in the hot summer. Density altitude makes the benefits of the advance useful for even us low altitude cruisers, some told me not to get one  unless flying at higher altitudes


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