I took my bike out the other day , on a full tank I got 128 miles on a 4 gallon tank , I'm thinking the previous owner changed the pipes , but didn't rejet the carbs , can this cause bad gas mileage ? thank you .
And think about that, Performance is all about making it more efficient so you get more power. If your mileage drops, how is that better performance? (assuming you were riding normally,,,)
As for the low mileage, could be a fluke if you made no recent changes, maybe a higher ethanol content in the last fill-up, choke lever stuck on, fighting a headwind,,, lots of possibilities... If it does it 3 tanks in a row, then maybe I'd start looking at things.
IIRC, it's been a long time, but yes, with factory jets and pipes that's about what I'd get on my '03 800B. From full to needing reserve was 110-120. Reserve was only like 1/2 gallon or so, not much at all.
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