I guess I haven't chimed-in on this thread yet, so to answer the initial question -
My 2006 Suzuki SV650 N (F.I., no fairing) that's geared-up 1T on the countershaft gets about 55 MPG on the Interstate at 70-75 MPH. Best its done is 62 MPG during some moderate back road riding in the 50-70 MPH range.
That's on ethanol-free 87 octane.
I don't P&G with it, as it's a V-Twin and slows immediately/drastically when you roll off the throttle. It will return 50 MPG in town also, using moderately quick acceleration then a smooth cruise at lower RPMs with minimal throttle opening.
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