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Tourer
Posts: 432
Gettysburg, 2008 Tour Premium | Finally the weather broke enough to provide a few days of no rain and decent temps enough to get out for a couple of days. I road from Gettysburg area to Lake George. Did all highway on the way up (81-84-87) and back roads down to Port Jervis on the way back. Back from Lake George I rode routes 9 to 29 to NY 30 to NY97 along the Delaware. Not much straight road in that mix. Best Gas mileage 44 MPG actual worst 40 MPG actual. This will probably be hight at summer temps because the temps were in High 50's leaving Lake George and the bike is pretty cold blooded at these temp's.
My setup is CFR mufflers, Lloyds IAC, fuel controller, and air filter and stock NKG plugs set at a 'tight' .9 MM.
Leaving PA I had the fuel controller set at Lloyd's base settings except cruise and and accel settings were one tick down (3 and 3.5 instead of 3.5 and 4). I wanted to get the best mileage possible at 70-80 MPH and I tried two things.
1) I tried adjusting the IAC to get crisp throttle response while keeping the instant fuel milage numbers high. Too open and the mileage numbers started to drop. Too closed and the bike became slightly blubbery. We are talking a very small difference hear, less that 1/4 turn.
2) I set the cruise and accel settings to 3.5 and 4 on the way out of Lake George and slowly made changes to the IAC until the milage numbers went up and throttle response was good. I saw some very high numbers as I got close to the best setting but keep in mind that actual mielage has to be checked at the pump Again I was amazed how such small changes could affect performance.
After getting back on the HWY at Port Jervis I did a pit stop for fuel and a sandwich in Lord's Valley. I got back on 84 and pulled off to top up gas and get some water 80 miles later. I had been running into a headwind with a lot of uphill and passing trucks. Speeds were 70 to brief shots to 90 passing. Checked fuel milage 44 MPG!!!! The bike runs great and pulls harder that it ever has 80-90 MPH.
The one drawback, and it is not major, is I get a few more pops in the exhaust but I can ride around most of this. Just for reference I believe the instructions for the IAC call for turning the screw out 3 1/2 turns, I believe mine is now set at around 5 to 5.5 turns out.
One final note is an observance. Do you remember the gurgle or growl from the intake on the stock bike that happens 2600 to 3000 RPM. Once I got the IAC and fuel set right it is back just slightly louder. I thought it was the mufflers and then I recognized it. |
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Central Wisconsin | Good write up! I don't have a fuel controller. I have S1 L1, K&N air cleaner and the IAC valve. Been getting 40-45 mpg riding 2up.
Interesting info on the IAC valve. Maybe I'll try to tweak mine again. |
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Fountain Inn, SC United States | You were on 84 and Rt 9 and you didn't stop in at Lloydz to say hello?  |
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Tourer
Posts: 348
Sturbridge, Mass | Jedi Jeff - 2011-05-11 1:32 PM
You were on 84 and Rt 9 and you didn't stop in at Lloydz to say hello?
Revoke his posting rights !!!
Blasphemy !! |
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Tourer
Posts: 432
Gettysburg, 2008 Tour Premium | I just saw Lloyd a week before at Motorvation. I thought about stopping on the way up but I was dragging after my last work week and he has been busy I am sure. Thomas - I had the fuel controller before the IAC valve. I had always thought that you could almost tune a basically stock bike with the IAC, at least get away from the on-off throttle lurch from being lean, but I have not tried it. I think the CFR pipes are open enough to really benefit from a little extra fuel. The real key to setting the IAC for me was observiving the real time fuel milage and getting it the highest number--I do not know for sure but suspect it is something like a manifold vacuum readout. If there were a way to manifold vacuum sensor or gauge and you rigged an extender of some sort to the IAC you could set this in a matter of minutes . |
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Fine tuning my Lloyd's CFR setup, ride review!