Hey Man, THERE AIN'T NO HILLS IN FLORIDA!! and my claimed 50 MPG, is calculated. The BC actually indicates a higher number. To qualify the conditions; it's 1 up, running mostly 5 over the posted limit in a small group of mostly old farts riding GW's. OH yea, no tail wind either. Our weekly rides are mostly north and south and the prevailing winds in FL are east to west. As indicated in an earlier post, running 80 to 85 mph loaded with camping gear that number drops into the mid 40's. It's all about aerodynamics and wind resistance.

__________________
Lynn Keen
Central Florida
'99 Canyon Red RETIRED AT 93,000 MI
'05 GRAPHITE METALLIC
'00 GS

Is there anyone that had disconnected the charcoal canister, then later found they had better mileage with the canister hooked up to begin with?

i live in colo. and have an 06lt. bought the bike w/3000mi on it and now have 21,000. i run 91 oct and keep the rpms between 3-5k depending on the terrain, i've always gotten 47-53 mpg and have seen it as high as 56 and that was doing a loop from denver, trailridge rd,granby,berthoud pass that takes you from 5,000-12,000ft and back, although your not really haulin ass over that! 42/48 tire psi ,dealer serviced and non-syn oil, every thing stock. i always cross check the Bc with the math and it checks out. very pleased

It arrived today, so I will put in in tomorrow after reading the manual on how to replace it and assuming the weather cooperates (it's been raining). I bought it on eBay ...

http://cgi.ebay.com/ebaymotors/ws/e...0184273956&rd=1

It was Bosch part number 15719. I'm really curious to see just what it may/may not do for my milage. Since I'm going on a trip on Monday I should find out pretty quick.

__________________
2006 Magnesium Black Metallic K1200LT (sold - sigh)
1996 Sinus (aka Cirrus) Blue Metallic R1100RT

Thanks for the update, Arthur. I want to try the same thing.

Just curious. Where did you find part numbers for motorcycle applications? As best I can determine, Bosch part # 15719 fits a variety of Ford built vehicles and therefore should be relatively easy to source locally.

Ben

I asked someone on the forum that had previously replaced theirs with a Bosch unit for the part number. If I can find the time to remove the plastic today I plan to install it. So, if it is the wrong one I'll know today or tomorrow at the latest.

__________________
2006 Magnesium Black Metallic K1200LT (sold - sigh)
1996 Sinus (aka Cirrus) Blue Metallic R1100RT

I've been on this list for almost 5 years and never once has anyone said the mileage was better with the cannister conncected or disconnected. As I remember, no one ever disconnected it for mileage, it's always been done to keep from collapsing the fuel tank.

__________________
On His Ride,
Steve - KA5MTE
'02 LTE - Black Nightmare
'01 LTC - Flying Purple People Eater (Ya gotta be old enough to understand)(RIP)

All righty then, I guess I will leave it disconnected.

I know this bike has been down more than a few times, which is one reason I felt it was a good reason to disconnect it.

I had a canister go bad on a low mileage 84 Dodge p/u, and it cost a small fortune to fix the damage caused by all the charcoal that went through the entire vacuum system and carb.

Thanks!

My two bits worth... I road 300 miles today and was almost empty. That averages out to 55+MPG. It was a rally and the roads were good with quit a few stops and turns.

Cheers, Bill
05 K1200LT

Hey Bill, Just wondering what altitude you were riding in. That affects MPG a lot.

__________________
On His Ride,
Steve - KA5MTE
'02 LTE - Black Nightmare
'01 LTC - Flying Purple People Eater (Ya gotta be old enough to understand)(RIP)

I just completed a 688mi trip this weekend from Olympia, WA (west side) to Waitsburg, WA (east side). This was over the Cascade mountains and averaged 45 MPG, running at 75 indicated, towing a trailer, 2 up. I removed the canister due to missing etc. I have had a high of 62 and a low of 38 under varying weather and altitude conditions. It is frustrating traveling with my friend's Venture or GW stopping for gas.

Be blessed!!

__________________
Larry Norris
99 K1200LTC w/custom trailer (Champ)
Olympia, WA

I talked with a Bosch rep today. He confirmed that part # 15719 is for certain Ford built engines. He further offered that Bosch offers a universal 'O2 sensor # 15729 that might work. He made no promises about the resistance values.

If you have replaced your '02 sensor and still pave the package it came in, please look for the Bosch part # and let us know.

Thanks much.

I bought the 15719 as that is what I was told I was needed. Gueess I'll need to check on the 15729 as well.

I found it on ebay for $48 delivered, so ordered one. It is a 4 wire sensor. My manual does show a 4 wire plug & I do recall I was supposed to order the universal model, but when I was given the part number I just ordered it without verification. The 15719 is also a two wire model. Ah well maybe I can use it on my Ford Escape Hybrid.

__________________
2006 Magnesium Black Metallic K1200LT (sold - sigh)
1996 Sinus (aka Cirrus) Blue Metallic R1100RT

Arthur. I have no idea which, if either is the correct part! This is just another random bit of gossip until someone verifies it.

If part # 15729 will do the job, it should save some effort as it appears that the wires can be cut and spliced in the manner of the Sensor offered by Beemer Boneyard. This would save some time and effort, not yo mention some money.

Just as an FYI, Bosch does not recommend splicing. They provide ties to hold the excess.

BTW: a 4wire plug has a preheater in the sensor. I didn't think abought that when I looked at the 2 wire 15729 model.

But since I will have both I'll see which works best.

__________________
2006 Magnesium Black Metallic K1200LT (sold - sigh)
1996 Sinus (aka Cirrus) Blue Metallic R1100RT

You have obviously looked into this far more than I have but I 'understood' the Bosch guy to say the wiring on #15729 was intended to be spliced. Here's another bit that adds to the confusion from the Beemer Boneyard web site.

"Universal O2 Sensor For All BMW Models

New in the box Bosch O2 sensor to fit all BMW models equipped with an O2 sensor. Includes a posi-lock connector to splice into your stock connector. Cost effective way to replace your O2 sensor. Also elimnates the need to remove the tank to access the connector plug."

I am wondering if the Beemer Boneyard sensor could be a Bosch #15729? Hopefully someone will chime in.

Just something to think about. I did a test on my Honda Accord (6 cylinder mild sporty engine), I ran regular gas and I was getting 25 to 27 MPG. I switched to high test and I am consistently getting 27 to 30 MPG. With the cost of gas going up the difference between low grade and high is becoming less as a percentage around here. I am typically paying 5% more for high test and I am getting 8 - 10% better gas mileage. A friend of mine tried the test on a 4 cylinder low HP car. He did not see any better gas mileage. I have not run this test on the bike as I typically run high test due to the engine being a higher performance engine. If any of you guys that are die-hard 87 octane users try the switch I think with these engines you will see better gas mileage. If I remember I will try to run low grade for the next couple of tanks. I am sure Sally will not like me for it, but it is for the good of many!!

__________________
Mike
In the frozen tundra
2003 Impala Brown LT
2001 Suzuki RM250
2000 FZR1000
1984 Honda Sabre
1984 KDX 200

Well when I get the 15729 I will check the installation sheet. The one for the 15719 (or did I read it elsewhere - I need to check when I get home) mentioned it used the wire isuulation as a O2 reference for comparision and that soldering the wire maybe difficult. That would not affect crimping, however.

As for low grade, I can't use it all as my engine pings badly with it. I'm going to try some midgrade though and see how that works.

__________________
2006 Magnesium Black Metallic K1200LT (sold - sigh)
1996 Sinus (aka Cirrus) Blue Metallic R1100RT

I do wish someone who knows about the resistance values of the stock sensor and that of #15719 and #15729 could share with us.

I agree that it would be nice to know the the numbers, but the universal sensor has been used previously. A search on O2 or oxygen sensor can turn up some useful information.

__________________
2006 Magnesium Black Metallic K1200LT (sold - sigh)
1996 Sinus (aka Cirrus) Blue Metallic R1100RT

I used the Bosch Universal sensor from beemer Boneyard for $79.
(less discount because I ordered quick disconnects at the same time)
came with splicing instructions and splicing kit...............
recycled the box so the number is gone.......................

__________________
Allan...HSV, AR
2003 K1200LT trike - Starfighter
2004 R1150RTP - Combat Touring
IBA 38152
BMW-MOA 97667
Patriot Guard Riders
...and man of leisure

Did the sensor from Beemer Boneyard happen to have a Bosch part # affixed or on the package? I have a sneaking suspicion that it could be #15729. TIA.
Ben

Does this help?

Click Here for photo

Click Here for link to Beemerboneyard

Attached Thumbnails

 

__________________
Rob V.B.
2003 BMW LT
Kickin' Tires and Tellin' Lies

Hey, I'm working on it

The beemerboneyard universal looks like a two wire (no preheater) model. More like the 15719 than the 15729.

When I get mine I will measure the resistance of the stock and both Bosch models and post the results. I'll also be able to verify the connector type (2 or 4 wire).

__________________
2006 Magnesium Black Metallic K1200LT (sold - sigh)
1996 Sinus (aka Cirrus) Blue Metallic R1100RT

I just made a round trip from Modesto, CA to Boise, ID. Only got 34 going and 36 mpg on the way home. I rarely get over 38 MPG! I use Chevron premium, run 2 up and 42psi front 48 psi rear, on a 05 LT. I've maintained the bike on regular schedules from the dealer. The only variable is I have a C-Bailey 2+ windshield with wings. Do you think this could be the big difference over everyone else's mileage?

__________________

George
Modesto, CA
2005 K 1200 LT Dark Graphite

I doubt your shield is the sole cause of poor gas milage, but it can make a differrence. I've t ought of buying a Parabellum shield because it can increase aerodynamic effeciency and gas milage accoording to them anyway.

I'm looking at more mechanical issues like the O2 sensor, valve adjustment, electronic ignition, spark plugs, air filter, fuel filter, etc. Just starting with what I think might be a high probability.

__________________
2006 Magnesium Black Metallic K1200LT (sold - sigh)
1996 Sinus (aka Cirrus) Blue Metallic R1100RT

Thanks Rob but it doesn't help me, at least. Now, if the box in the picture had a Bosch part #...

Arthur plans to post the resistance values of both the 15719 and the 15729 sensors. Hopefully someone will be able to then tell us if either is a satisfactory less costly and more widely available alternative to the original equipment sensor. If I understood the Bosch rep, part # 15676 is the o.e. replacement.

Thanks again.

The universal from Beemer Boneyard is a four wire.....
The instructions want you to cut the OEM wires, then cut the universals wires to the exact length removed from the OEM. They include a splicing kit the size of a cell phone. I did cut the wires off the OEM with a hack saw blade to facilitate removal, then cut the new wires to the exact length and installed the sensor. No room for their splicing kit so I just soldered the wires.
The length of wires you cut/keep is important as it will determine where you have to reach to make connection. Next time I'll remove more tupperware and leave myself room to work.

__________________
Allan...HSV, AR
2003 K1200LT trike - Starfighter
2004 R1150RTP - Combat Touring
IBA 38152
BMW-MOA 97667
Patriot Guard Riders
...and man of leisure

OK Thanks for the O2 sensor tip. I'm almost due for the 24K maintenance. I'll look into it.

__________________

George
Modesto, CA
2005 K 1200 LT Dark Graphite

I actually need more info before answering. I see that the CB is #2 with wings. What you don't say is if it is if it is +/- in height, how high you had the windsheild when running and how fast you were running two up.

__________________
On His Ride,
Steve - KA5MTE
'02 LTE - Black Nightmare
'01 LTC - Flying Purple People Eater (Ya gotta be old enough to understand)(RIP)

The CB is a #2 +2 and I run it a couple of inches from the top. We averaged 60 according to the BC, but really we ran 83 mph +/- in Nevada, and 75 +/- through Oregon. Not too much head wind on this trip. But it was cooler so we had the flaps opened up all the way too. But this is common for our winter rides. We ride about 85% 2 up. Even in the summer in Central California with the flaps closed (90+ degrees) I have the windshield close to the top at speed and only drop it when going through slower zones.

__________________

George
Modesto, CA
2005 K 1200 LT Dark Graphite

Well I'm back home, but have been unable to measure the resistence fo the O2 sensors. I'll try again this weekend. I did find out that both the 15719 & 15729 are both 4 wire sensors. So both have a heater in them. The universal sensor looks just like the one by BeemerBoneyard.Com with the precut wire, 4 posilocks, and the case to enclose them. Of course, Ic an't tell you if they are the same since BB does not supply the part number on the box.

I'm going for a ride with the wife tomorrow, but when I get back will start taking off the plastic and see what I can do wtih measuring the resistance of the sensors before I do any replacements.

PS: Well after a bit moe research it is not likely I will be able to measure the resistance except when in operation or when heated with a propane torch. So, I guess it'll be a case of just repalcing it and seeing what happens.

__________________
2006 Magnesium Black Metallic K1200LT (sold - sigh)
1996 Sinus (aka Cirrus) Blue Metallic R1100RT

Thanks for all that you are doing Arthur. Your observations confirmed my suspicions with respect to the Universal 02 sensor. Re: measuring resistance values, do you know what the stock/new reading should be?

At this point I would bet a nickel that the # 15729 will do the trick.

Speed much over 65 MPH is going to affect your gas mileage on this beast. The +2 with wings all the way up at +75 is going to be another major factor. That is one huge air dam you putting up and that WILL affect your mileage also, big time in my opinion.

You say you never get better than 38 MPG generally, have you followed the procedure to reset the Throttle Position Sensor (TPS)? On the LTs up to '05, you pull fuse #4 in the right most fuse box under the seat for an hour or so (I usually do it over night), this allows settings in the Motronic for the TPS get lost. That would be the right most fuse box when you sit on the bike. Replace the fuse and turn the bike fully on, but don't start it. Crank the throttle wide open and closed twice. Turn the bike off without starting it. When you start riding next time, the bike will relearn. It's just like pulling the battery on car and having the engine management system relearn how you drive. I don't know which fuse you pull for the '05s or newer.

I generally do the TPS reset everytime I service the bike, which is about every 6K miles for me. If I think the fuel economy is starting to drop off before then, well I pull the fuse earlier and let is set overnight. I've seen my mileage come back up as much as 6 MPG on a reset, that is until I put the newer throttle cables on my '00 and then it never was never that good again.

I hope this helps some.

__________________
On His Ride,
Steve - KA5MTE
'02 LTE - Black Nightmare
'01 LTC - Flying Purple People Eater (Ya gotta be old enough to understand)(RIP)

Thanks for the tip, Steve. You noted that the TPS reset procedure is for LTs "up to 2005." Does this include 2005 models? Thanks again.
Ben

If I remember correctly, the 05 and up only have 2 fuse boxes under the seat and I don't remember anyone chiming in which fuse you pull on the newer LTs. I would have posted the info if I had known what it was. Sorry.

__________________
On His Ride,
Steve - KA5MTE
'02 LTE - Black Nightmare
'01 LTC - Flying Purple People Eater (Ya gotta be old enough to understand)(RIP)

Thanks Steve. I would bet a nickel that someone will chime in....
Ben

Thanks Steve I'll look into it and give it a try.

__________________

George
Modesto, CA
2005 K 1200 LT Dark Graphite

Probably not bad for the conditions you describe. My 2007 has averaged 47.8 for the nearly 5,000 miles I've ridden it. This is at speeds typically around 60 indicated (probably 54-55 actual) in the hills of northern PA. I think my overall high was about 53 MPG and my low was one of the first tanks when new and I think it was 38 or something in that neighborhood. I calculate each tank and it matches the BC within 1 MPG usually. If I run at 80 on the interstate, the BC drops to 42-44 MPG and I'm guessing that is about right. If I ride 50 on the back roads I'll indicate 52-56 which I also believe is pretty accurate.

__________________
2007 K1200LT, VOICE II, Navigator III+, Motorrad Communicator

Sorry, I was unable to find any specifications on any O2 sensor. And since you can't measure tehm except when in use or heated with a torch, it's not likely I'll be able to either.

I'm just going to replace it and go with the flow and see what happens. I'll keep the original just in case I need to reuse it.

__________________
2006 Magnesium Black Metallic K1200LT (sold - sigh)
1996 Sinus (aka Cirrus) Blue Metallic R1100RT

Sounds like a good plan. Please keep us posted.

Ben

2000LTC w/102k miles and no mods and gets 40.3-47.8 with a mix of highway and town driving

an interesting and disturbing side note ... 55mph gets around 48-54mpg compared to 75mpg getting 37-41 on my LT! - is the extra 15MPH really worth the gas sucking? not for me, so sometimes I'll be the one in the slow lane with the cruise set to 55-60 - lots of cars have started driving 55 in a 75 zone for the same reason

besides, why should any of us be looking for the shortest or fastest way to end our ride? ... that's not why I bought a bike - the longer it takes me to reach my destination, the better





I also usually run 87 reg. with both my LT and my FLHS ... every once in a while I'll put in 92 octane, but I never notice a difference in any way when I do it

the only 'picky' bike I own is a '05 Hayabusa that NEEDS 92+ or else it sounds like complete crap and acts like a baby about it (I put a tank of 87 in it once by mistake and drained it after about 15 mins of riding)

from my experience, 87 octane works great in my LT ... and I don't even know what the 'brown wire' does ... explain?

__________________

Any update on this????? Thinking I need to replace my o2 because I am burning rich.

__________________
Tom Ress
Great White North
Minnesota
Canyon Red 2000

Yes, I'd posted a new thread but should have here too I guess. After the new O2 sensor I'm getting 3 ~ 5 mpg better. That's with the half tank I ran on it. It really needs a better run and a couple of tanks of gas to see where it is going to settle out, but it steadily performed better at the same speeds I was running on the highway. I usually average 75 mph (80 on the speedomer, but 75 on the GPS). I only use premium gas, but it also has 10% ethanol in it. You may do a whole lot better than me on gas without ethanol in it.

I've actually put the LT away for a bit as my wife is going to be busy for a while and I want to try out the RT for some more sportier rides. But in a couple of weeks, or sooner possibly, I'll take it out on some longer distance rides and see hwat it gets. I know I can help improve the performance by changing windshields too. I'm thining of a parabellum model. But as much for a better ride for the wife as milage. The stocker adds a lot of drag at full extension and that's what I use on the highway too.

__________________
2006 Magnesium Black Metallic K1200LT (sold - sigh)
1996 Sinus (aka Cirrus) Blue Metallic R1100RT