Ok, to start off I am an electronics engineer but not a huge internal combustion engine person.

So after buying an mc28 and finding out how much it is going to cost to really get it running to potential I figure why not just build it a new ignition. For me it’s really not that hard to build a programmable ignition, like i guess the ones Matt from tyga is using on his 28. Now the problem is I have limited ICE knowledge and this could turn out to be detrimental to my motor so at the moment this is a feasibility problem for me and I need to decide if it is worth the effort.

My bike has std card, tyga pipes and cans and modified air box, otherwise pretty standard engine.

So to start as far as I understand the problem with the 28 is that on the stock card the timing is “retarded” at the top end so as to limit the power. Is this statement correct?

From my understanding one wants more timing advance as the revs increase, which means then spark fire earlier and earlier as the revs increase.

Does anyone know what the timing on a std card vs 030 card is like. I am talking in terms of min and max advance during low and high rpm. Really want to know what the maximum advance should be so I don’t try and advance timing too much.

Had a quick look at the flywheel on my bike and noticed there are two sets of pickups at what looks like 90deg to each other. Guess they are one for each cylinder? But on the flywheel there are 4 bumps to create pulses on these pickups. Why have 4 and not just 2?

I plan to map the std ignition in the near future, but not sure when i will have time. By the off chance has anyone done this? If they had and wouldn’t mind sharing that would be awesome? If they have done an HRC too and wouldn’t mind sharing that would be even better as i don’t have one so cant do that.
_________________
94 mc28 SE