Did some ignition testing.
Coil:
Came with XSCharge's PMA kit. It is Part #17-6822 from XS650direct.com. See attachment.
Between primaries is 5.7 ohms. Spec states 4.5 ohms. Is this significant enough to cause choppiness at 3/4 to WOT?
Between secondaries is 16,500 ohms.
Open between primes and secondaries.
Also noticed, what I took to be, corrosion around the the Pamco E-advance chip MSP430G2331. There is also a silver ring on the top of the chip that isn't usually on chips.
I wouldn't think the chip would be "partially" blown but I could be wrong. Ordered some from Mouser.
Voltage between power (forgot to mention the bike has an M-Unit) and coil is 12.46 V.
Between power and Pamco igniter box is 12.08 V
Difference of 0.38 V. Just less than the 0.4V max difference Grizld mentioned.
My questions are:
Is the resistance of 5.7 ohms between the coil's primaries an issue? I've only read that low or no resistance between primaries is an issue.
Could the chip possibly be an issue? The Pamco unit certainly works - Idle to 3/4 throttle runs good.