Off to see the Wizard

[HilltopMark]

Also I think I saw somewhere at the start of the thread somebody asked about what grade of fuel we map to. It's 95 RON. We do have more aggressive maps which make more power but require strict use of higher octane fuel, but we don't put them on retail customers' bikes. Cheers.

 

[HilltopMark]

Don't hold your breath on getting a written reply that you can publish on here.

Whilst you are at it can you ask if a bike that has been re-mapped will still meet the Euro 4 emissions requirements?

I'll get slated for posting this but they are just simple questions that deserve an open answer.

P.S. the fuelling on the 2015 TE LC feels just fine.

A remapped bike will not meet EU4 emissions requirements. If it did then the manufacturer would release the bike with that map in the first instance. They hobble their engines with lean running and retarded timing because they have to do so.

 

[HilltopMark]

Do you get these remapped on 95 RON or 98 RON fuelling?

If so, these performance maps might not be good for those on remapped bikes for touring around on shit fuel. You could run risk of running to lean.

Always mention to your next buyer its been remapped for high grade fuel or they could end up in shit if they tour on crap fuel.

One valid reason why our bikes can be improved so much on fuelling is they are designed to travel and use a wide variety of fuel grade/quality and high altitude low air volume, which needs to stay as it is if you intend touring 3rd world...

I'd be inclined to leave it as it is and buy a Sports Bike if you want something fast... map that as much as you like..

Sorry to be boring and a killjoy on this matter

The bikes run lean as standard. The standard bikes in hot climates are at risk of severe problems if they get fed a batch of bad fuel. We make the bikes run richer (and therefore more safely).

 

[Victor c]

Just re-read mine and searched the entire document for '100' and nothing found - so unless BMW have changed something or omitted it from the manual then it would appear that full power is there in all modes.

Page 171 of 08.2015, 8th edition, 01 -
Nominal output 92k, at engine speed: 7750 min-1
With power reduction oe 79kw, at engine speed: 7750 min-1

 

[Engineer]

Hi Steve (and everyone else) it's Mark from Hilltop. Geoff almost never gets to post on the forum so I'll step in. I wasn't in the dyno room when either bike was done, but I'll have a stab at answering. My guesses: It's possible that the two bikes in question could have been in different ride modes one the before run but not on the after run. It's also possible that the Akra would make less power on the standard map as the bike would be running even leaner that normal. Given the extra lean running if there was detonation the ECU would retard the timing further, resulting in significant lost power.

I didn't think the LC had knock sensors? How does it detect detonation?

 

[Engineer]

Page 171 of 08.2015, 8th edition, 01 -
Nominal output 92k, at engine speed: 7750 min-1
With power reduction oe 79kw, at engine speed: 7750 min-1

That power reduction is the OE 91 octane mod, not standard bike.

 

[Engineer]

A remapped bike will not meet EU4 emissions requirements. If it did then the manufacturer would release the bike with that map in the first instance. They hobble their engines with lean running and retarded timing because they have to do so.

That's what I thought, thanks.

 

[Warlord]

Hi Steve (and everyone else) it's Mark from Hilltop. Geoff almost never gets to post on the forum so I'll step in. I wasn't in the dyno room when either bike was done, but I'll have a stab at answering. My guesses: It's possible that the two bikes in question could have been in different ride modes one the before run but not on the after run. It's also possible that the Akra would make less power on the standard map as the bike would be running even leaner that normal. Given the extra lean running if there was detonation the ECU would retard the timing further, resulting in significant lost power.

Ok that makes sense. So as the customer rode down in the top Power Mode. I'm guessing the Operator put it in a lower power mode for some reason. If we eliminate that idea then Akrapovic have some explaining to do... or at least warn customers not to fit these systems without a remap immediately.

 

[Warlord]

It's a head scratcher, but cutting through all the white noise, is it better after the visit?


Sent from my iPhone using Tapatalk

I disagree... White Noise is peoples opinions when the facts are trying to be established.

 

[Warlord]

Also I think I saw somewhere at the start of the thread somebody asked about what grade of fuel we map to. It's 95 RON. We do have more aggressive maps which make more power but require strict use of higher octane fuel, but we don't put them on retail customers' bikes. Cheers.

Makes sense and that is definately the responsible thing to do.

 

[Warlord]

A remapped bike will not meet EU4 emissions requirements. If it did then the manufacturer would release the bike with that map in the first instance. They hobble their engines with lean running and retarded timing because they have to do so.

So if a Euro4 bike is remapped will it pass an MOT when its due, or fail on emissions?

 

[Rushy]

So if a Euro4 bike is remapped will it pass an MOT when its due, or fail on emissions?

They don't emissions test bikes .......

 

[Rushy]

That's what I already knew , thanks.

Fixed for accuracy ......

 

[HilltopMark]

So if a Euro4 bike is remapped will it pass an MOT when its due, or fail on emissions?

It will pass. Emissions checking is not part of the MOT.

 

[HilltopMark]

I didn't think the LC had knock sensors? How does it detect detonation?

They do have them.

 

[Engineer]

Ok that makes sense. So as the customer rode down in the top Power Mode. I'm guessing the Operator put it in a lower power mode for some reason. If we eliminate that idea then Akrapovic have some explaining to do... or at least warn customers not to fit these systems without a remap immediately.

I'd like to see BMW confirm whether or not the modes change the max power output in addition to the throttle response, ASC, ABS, damping - it's a question that's still unanswered.

 

[Victor c]

That power reduction is the OE 91 octane mod, not standard bike.

On the BMW Motoradd UK site, I have just found a clear explanation of the riding modes. In Rain mode, full torque and output potential is retained.

For some reason, it will not let me copy a direct link. However it can be found at http://www.bmw-motorrad.co.uk/uk/en/index.html under Innovation and technology, Technology, Safety, Riding modes.

 

[Engineer]

They do have them.

The original 2013 press release for the LC said that it didn't - this surprised mewhich is why i remember it.

 

[Engineer]

On the BMW Motoradd UK site, I have just found a clear explanation of the riding modes. In Rain mode, full torque and output potential is retained.

For some reason, it will not let me copy a direct link. However it can be found at http://www.bmw-motorrad.co.uk/uk/en/index.html under Innovation and technology, Technology, Safety, Riding modes.

Thought so.

 

[HilltopMark]

The original 2013 press release for the LC said that it didn't - this surprised mewhich is why i remember it.

They definitely do have one. The previous air cooled models had one too IIRC.