Doug,

sorry for not checking my emails here.  The upgrade went well.

The backfiring is finally being fixed...there are a lot of things wrong with the engine right now....all are minor adjustments.

Valve lash, advancing spark, etc, etc....did you rebuild your ignition system?

I really really really like the alternator kit....man, that sucker finally charges.


Jeff



[quote:3dg84hpa]I'm at the stage of deciding whether or not to do the upgrades on my 550 that you have just gone through. I want to convert to a NEG ground system, install an alternator, and try the electronic ignition upgrade. Can you tell me whether you have resolved your backfiring problem and what are the pitfalls in doing each of these upgrades? 
Thanks[/quote:3dg84hpa]