Is there anything that can be done to get better performance on my 1971 BMW R75/5 at high elevations--such as riding up hill on a freeway at above 6,000 feet or so?
I guess something is needed to advance ignition timing for low pressure. My 1984 Yamaha Venture runs very well at high elevations, as it has a "pressure sensor" to advance the ignition timing whenever it can, such as higher elevations or lighter loads, etc. It can barely tell the difference at 7,000 feet. Any thing like that pressure sensor available for airheads to work with any electronic ignition? Or any other ideas?
My 71 BMW runs great at sea level, does great even up the hills, but I can barely climb a hill at 45 MPH when above 6,000 feet elevation--in any gear.
What I have now on my BMW are Mukuni Carbs, dual plugs on each cylinder (with two six volt Dyna dual output coils in series--still has waste spark) Dyna electronic ignition.
I assume all airheads run very lousy above 6,000 feet elevation and not much can be done about it--but I figure it won't hurt to ask.
-Don- Reno, NV