Mileage / consumption - normal?

[victorlaszlo]

Originally Posted by lht

I believe the popping was always there. The Cat was muffling the noise. Make sure you

have a leak free exhaust. The gaskets at the header/ exhaust pipe connection are a joke.



They are to thin, BMW should have used a crush metal o'ring gasket.

Would a leaking exhaust cause this fuel increase...?


Sent from my iPhone using Tapatalk

[sgoodwin]

Mostly just noise, I'd go through & do a total tune up, check timing, valves, tps, plugs, wires, clean injectors & throttle bodies & sync. from there you have a known baseline to start from & see if mileage is still low. If it is then time to check compression & do a leak down test. Even when I'm whacking the throttle open I still get high 30's mileage, no cat & Laser exhaust w/chip.

[throttlemeister]

Originally Posted by sgoodwin

Mostly just noise, I'd go through & do a total tune up, check timing, valves, tps, plugs, wires, clean injectors & throttle bodies & sync. from there you have a known baseline to start from & see if mileage is still low. If it is then time to check compression & do a leak down test. Even when I'm whacking the throttle open I still get high 30's mileage, no cat & Laser exhaust w/chip.

Bingo.

[victorlaszlo]

Originally Posted by hugzy

you can adjust the fueling for the type of exhaust you have fitted just by changing the plugs in the Motronic , you don't have to add chips or mushy peas. I didn't have the right plug so I just made a bridge to join two pins togeather , in my case 2 connections together. I,ll try and find the diagram and post it. I have open pipes so I just needed to join 2 pins togeather. You need to access the left hand motronic so the left fairing needs to come off. This is what I mean only the conections are not shown here. It made a big difference to my fuel consumption, for the better !

CAT Code Plug Pin-outs - BMWSportTouring Forums

Going for this route, seems to make sense. However, emissions aside, why plug is for a decatted tuned exhausts lambda fitted S...? Have troubles decoding the table ;(


Sent from my iPhone using Tapatalk

[victorlaszlo]

You don't happen to have this scan still?




Sent from my iPhone using Tapatalk

[TX_Biker_Scum]

According to a Cycle World mechanic question, you may have a bad 02 sensor. Does your cat eliminator have the 02 sensor bung on it? No sensor could also be a problem.

[victorlaszlo]

Originally Posted by TX_Biker_Scum

According to a Cycle World mechanic question, you may have a bad 02 sensor. Does your cat eliminator have the 02 sensor bung on it? No sensor could also be a problem.

Hi,

I was afraid of the same so popped by my mechanic who hooked up the bike to a diagnostics computer.

He confirmed reading from the O2 / lambda sensor and that all readings were within the normal...

Thanks Victor


Sent from my iPhone using Tapatalk

[hugzy]

This is how I set my fueling and it worked great for me, no more popping and much better fuel consumption. About 20 km per liter, if I don't go mad, what ever that is in miles ?
I used the straight through setting, 2 contacts joined togeather. Just take the plug out, mine didn't have a plug at all. Unless you've got the right plug of course. Must say I borrowed the scan from internet so thanks to the owner !
https://www.dropbox.com/s/m64c1wk0b659x2k/R110.CCPSettings.JPG?dl=0

[victorlaszlo]

Amazing - cheers mate - looks like stage 3 is what I need to go for


Sent from my iPhone using Tapatalk

[hugzy]

Yeah thats the setting I use as well, just use a couple of spade connectors and a few cm of wire and bobs your uncle !

[victorlaszlo]

On the way to the garage to sort this... Anything else to consider ie disconnecting the battery / power etc?


Sent from my iPhone using Tapatalk

[Roger 04 RT]

Originally Posted by hugzy

This is how I set my fueling and it worked great for me, no more popping and much better fuel consumption. About 20 km per liter, if I don't go mad, what ever that is in miles ?
I used the straight through setting, 2 contacts joined togeather. Just take the plug out, mine didn't have a plug at all. Unless you've got the right plug of course. Must say I borrowed the scan from internet so thanks to the owner !
https://www.dropbox.com/s/m64c1wk0b659x2k/R110.CCPSettings.JPG?dl=0

The information in the link is not correct unless your Motronic has been altered using a new EPROM from the company that made the chart--I forget if it's BBPowerchip or someone else.

Generally, if your bike has a Motronic MA 2.4 you get the best performance with the stock (correct) coding plug.

At the bottom of the page, last post, link below, is a list of which plugs for which bikes:

Coding Plugs for R1100, R1150 Decoded - BMWSportTouring Forums

[Roger 04 RT]

From the thread.

UPDATED June 6, 2015

--corrected year for US 2002 R1150GS single-spark

Earlier in this thread I posted up the best info I could find at the time on how BMW designed its Coding Plugs, or CCPs as they get called. Recently, I've come across much more accurate information from "the source". That is to say, the Motronic units themselves.

It turns out, as most of you know, that each Motronic unit has an EPROM. The EPROM contains instructions for the Motronic, along with over 600 tables of data that include 8 sets of fuel and 8 sets of spark tables. It also includes a table with 8 text string entries that say exactly what each of the 8 Coding Plugs has been designed for.

It is pretty easy to get the Motronic 2.4 to tell you what each CCP selects. You simply plug in a CCP and run an Autoscan with a GS-911. I've also confirmed the GS-911 report by having the chips removed from the Motronic and read with an EPROM reader and Hex Editor.

The bottom line is that the ONLY good advice one can give is to use the stock Coding Plug. The reason is that there is no formula that says a certain pin on the CCP has any particular function (e.g. Pin 86 does not effect Octane). It also turns out that even if you compare two R1150GSs, for instance, the CCP can have a different meaning based on the date and delivery-location of the motorcycle.

So ignore earlier posts in this thread, and since there are several different EPROMs, if you want to know which CCP is designed for which motorcycle-configuration for your bike, READ THE EPROM with a GS-911 (R1150).

Five bikes I have data on at the moment are:
2004 R1150RT US (USA) Twin Spark
2003 R1150GS SA (South Africa) Twin Spark
2002 R1150GS CA (Canada) Single Spark
2002 R1150R CA Single Spark
2002 R1150GS US Single Spark

Here is the readout from each bike's various coding plug configurations. You can see the differences for yourself. If for example you put a Yellow Coding plug into the SA bike it selects No Series, and runs accordingly—barely at all!

2004 R1150RT US (USA) Twin Spark
No Coding Plug: R1150R/GS US+ECE
Yellow Coding Plug: R1150R/GS Japan
Beige Coding Plug: R1150R-GS Ocatan 91
Pink Coding Plug: R1150RT-RS US+ECE
30-86 Coding Plug: R1150RT/RS Japan
30-86-87: R1100S US+ECE
30-86-87a: No Valid String found
30-86-87-87a: keine Serie (no series)

2003 R1150GS SA (South Africa) Twin Spark
No Coding Plug: R1150R/GS US+ECE
Yellow Coding Plug: R1150R/GS Japan
Beige Coding Plug: keine Serie (no series)

2002 R1150GS CA (Canada) Single Spark
No Coding Plug: R1150 GS ECE Kat
Yellow Coding Plug: R1150 GS US u.TEV
Beige Coding Plug: R1150 GS CH o.TEV

2002 R1150R CA Single Spark
No Coding Plug: R1150R/GS ECE Kat
Yellow Coding Plug: R1150R/GS US u.TEV
Beige Coding Plug: R1150RS/GS CH o.TEV
Pink Coding Plug: R1150RT ECE/US Kat/T
30-86 Coding Plug: R1150RT US II Kat/TE
30-86-87:
30-86-87a: KEINE SERIE
30-86-87-87a:

2002 R1150GS US Single Spark
No Coding Plug: R1150R/GS ECE Kat
Yellow Coding Plug: R1150R/GS US u.TEV
Beige Coding Plug: R1150RS/GS CH o.TEV
Pink Coding Plug: R1150RT ECE/US Kat/T
30-86 Coding Plug: R1150RT US II Kat/TE
30-86-87: R1150 R/GS ECE ROZ91
30-86-87a: KEINE SERIE
30-86-87-87a:

[victorlaszlo]

Hi Roger,

Which of these settings would be corresponding to no-cat, 95 octane fuel, remus (/laser) open mufflers?

Many many thanks Victor

[victorlaszlo]

Which market it was intended for originally I suppose is irrelevant as that's just intended for emissions control?


Sent from my iPhone using Tapatalk

[Roger 04 RT]

Originally Posted by victorlaszlo

Would a leaking exhaust cause this fuel increase...?


Sent from my iPhone using Tapatalk

A leaking exhaust can cause a fuel consumption increase by letting fresh air reach the O2 sensor. Here's what happens:

The leaked air adds oxygen to the exhaust. The O2 sensor reactss the extra oxygen has a lean mixture. The Motronic reads the O2 sensor and compensates by adding fuel.

Leaking exhausts also can lead to exhaust popping.

[Roger 04 RT]

Originally Posted by victorlaszlo

Hi Roger,

Which of these settings would be corresponding to no-cat, 95 octane fuel, remus (/laser) open mufflers?

Many many thanks Victor

The plugs don't do what you think. Each plug is designed for a specific motor: heads, cams, intake runners and exhaust. On the R1100S I'm only aware of one correct plug. If you had an R1150GS there can be two or three correct plugs. To know for sure you have to use GS-911 to read your Motronic.

[Roger 04 RT]

With a GS-911 you could plug in every possible coding plug, then autoscan to see what you Motronic read back.

[victorlaszlo]

So are you saying all markets, irrespectively of fuel quality, catalysator or not, standard or performance mufflers had all the same plugs...?

Exhaust I'd done up really well and tight, if there was any leak it would have to be minimal and shouldn't really be able to mess up the consumption to this level...

My mechanic did in fact plug the bike in to the computer and all readings were normal...

[victorlaszlo]

One step in the right direction - Roger, your suspicion is confirmed - it runs like a pig on the stage three on the diagram


Sent from my iPhone using Tapatalk