LPG ignition Map

[Engine Fan]

I need a base line ignition map for this engine configuration to use with Mega Squirt.

AI came up with an ignition Map based on these inputs:

4.9 2 valve pushrod inline 6 with ported head and flow enhanced stock size valves(1.78" intake and 1.6" exhaust diameters)
8.9 to 1 compression
Intake valve closes at 52 degrees after bottom dead center,
208 @ .050"lift intake duration 252 @.006" lift intake duration
211 @.050" exhaust duration 266 @.006" lift exhaust duration,
.525" and .516" intake and exhaust lift,
108 degree lobe separation and 104 intake centerline,
17" overall intake runner length with 1.65" inside diameter,
Short length well shaped tubular exhaust manifold with 1 5/8" exhaust runners 6 into 1 and 2 1/2 inch exhaust system with minimal bends.
460 cfm Propane carburetor with cold air intake.

 

[aussie7mains]

If your talking about LPG, your total advance is way to high, cut back to around 32BTDC. Im presuming the MAP is Kpa, so 100 is atmospheric. you could probably run more initial advance, i run 25 degrees with a 9:1 comp, a similar cam, but blown. I also run NO centrifugal advance at all. Are you running a mixer type system, if so what type, we dont use IMPCO much in Australia, OMVL is a good one.