dual spark map for 3.2 SS
 

I am these days mapping my newly built 3.2 SS engine. I started out with a 964 ignition map but believe this may not be good for the older 3 l engine, I have dual spark 10.5 CR (measured to 10.2) and two EDIS systems in parallel and a VR sensor. Narrow runners and small port head. What I found was the engine appears to like it better with slightly less advance in the cruise range. In the WOT bins I now have 25 degrees@3500 tapering off to 20 after 4500. At cruise (mid load bins) I have 31 degrees as max. All of this is based on just isting to the engine note and I don't expect this to be accurate. However very hard to find rolling road operators here willing to take on Megaaquirt. Based on engine not ab seat of the pants I ended up backing off on advance from the 964 map until engine sounded happy and revved freely. With the 964 map I did notice a hard engine sound, especially below 3000 rpm and mid loads and I just kept backing off until the engine note turned softer. In the high load bins on the othe hand I ended up with more advance than the 964 map, but less at 2000-2500 rpm at cruise. I did the no-load bins in the parking lot (out in the hills) and I interpolated until I got to where I am now. In the early hours this morning I took it to the deepest subsea tunnel we have here, with a 2 miles long hill and ran up and down 5-7 times testing looking for power at WOT and at the same time breaking it in properly.

Now; I would very much appreciate if I could see others maps, for a similar engine configurations. Just to see where I am compared to others ?

I run stock SC cams btw, SSIs and 70 mm Dansk Sport muffler. CIS plenum and EFI