it depends on if your trying for optimium set-up all the time or are traveling alot and going to lots of different elevations if you are just riding around locally and just occasionally i wouldn't worry about it if you take you bike in to most yamaha sahops that have been around for a while you could get them to throw it on there e.g.a and they could tell you pretty quick wether you are rich or lean and then it is only a matter of changing needle heights or mains to suit.
1973 z1 2-1974z1-a,2-1975z1-b dragbikes1015cc+1393cc, 1977kz1000,1978kz1000,1981kz1000j, 1997 zx-11, 2000 z12r,1428turbo nitrous pro-mod and a shit load of parts thats all for now leader sask.,CANADA
I THINK MY POWERBAND BROKE
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