Try looking for missing parts in the airbox. A missing 'snorkel' on the top of the airbox will cause the symptoms you mention. Take a look at the spark plugs too. They will tell you if you are bogging rich or lean.
'97 EN500LTD 'Hidalgo'
178,000+ miles so far
SlipStreamer Enterprise II, Vista Cruise,
Fiamm air horns, Cobra Spots, LED Rider ProMod Spots, Drifter solo seat, Pro-Tac backrest, 17/42 sprockets, Darkside rear on 500A rim, ScottOiler, F&S luggage rack ,Throttle Rocker, Viking bags, Victory Vegas handlebars, Kuryakyn grips, LED & HID lighting, 4-gal AUX fuel tank, etc...
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