Go Back   Horizons Unlimited - The HUBB > Technical, Bike forums > BMW Tech
remapping ECU for low octane remapping ECU for low octane
Register FAQ Calendar Today's Posts
BMW Tech BMW Tech Forum - For Questions specific and of interest to BMW riders only.
Photo by George Guille, It's going to be a long 300km... Bolivian Amazon

I haven't been everywhere...
but it's on my list!


Photo by George Guille
It's going to be a long 300km...
Bolivian Amazon



Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 3 Jul 2004
Chris Scott's Avatar
Super Moderator
Veteran HUBBer
  
Join Date: Jun 2000
Posts: 4,813
remapping ECU for low octane
Not a BM specific question but there was nowhere else to put it - maybe you can help.

Not quite sur what I am talkiing about but - Octane booster/etc apart - on bikes with the right sort of electronics is it possible/viable/sensible to re-map your ignition electronics with laptop/software to retard ign for low octane fuel (like KTMs and 11xxGSs can do, sort of).

Or best just to leave it alone - the smarter ECU will work round the worst of the pinking?

Just a hypothetical question.

thanks

Chris S

Reply With Quote
  #2  
Old 5 Jul 2004
Contributing Member
Veteran HUBBer
  
Join Date: Jul 2002
Location: Sydney, NSW, Australia
Posts: 1,362
Some EFI systems have "knock sensors" - these will retune to suit the fuel used as well as the engines state of ware.


I think the R1200GS has one. But not the R1100 motors .. and I don't think the R1150 have one either.

-----

Few and far between would be OEM EFI systems with externally programable maps.
The motornics do not have an externally progarable map so you cannot tune these with an external pc. Some have alternate maps - you get to select which one but that is about it. An alternative is to change the engine position sensor position changing the timing. Similar to altering the timing on a vehicle with a distributor and points. Same princile applies to any EFI systems without knock sensors.

People are making their own EFI system to have programable maps - see http://www.jefferies-au.org/My16M/index.htm


PS EFI systems can suffer from heat vapour lock. Ask any early bmw K bike owner who has been in warm places with low fuel levels and a dirty petrol filter ...

[This message has been edited by Frank Warner (edited 04 July 2004).]

[This message has been edited by Frank Warner (edited 05 July 2004).]
__________________
---
Regards Frank Warner
motorcycles BMW R80 G/S 1981, BMW K11LT 1993, BMW K75 G/S
Reply With Quote
  #3  
Old 5 Jul 2004
Chris Scott's Avatar
Super Moderator
Veteran HUBBer
  
Join Date: Jun 2000
Posts: 4,813
Thanks Frank - good answer.

Chris
Reply With Quote
  #4  
Old 7 Jul 2004
bmwjack's Avatar
Tired old bike rider!
HUBB regular
  
Join Date: Oct 2003
Location: Rockhampton, Queensland Australia
Posts: 22
Do you know anyone that has used these boxes?


Quote:
Originally posted by Frank Warner:
Some EFI systems have "knock sensors" - these will retune to suit the fuel used as well as the engines state of ware.


I think the R1200GS has one. But not the R1100 motors .. and I don't think the R1150 have one either.

-----

Few and far between would be OEM EFI systems with externally programable maps.
The motornics do not have an externally progarable map so you cannot tune these with an external pc. Some have alternate maps - you get to select which one but that is about it. An alternative is to change the engine position sensor position changing the timing. Similar to altering the timing on a vehicle with a distributor and points. Same princile applies to any EFI systems without knock sensors.

People are making their own EFI system to have programable maps - see http://www.jefferies-au.org/My16M/index.htm


PS EFI systems can suffer from heat vapour lock. Ask any early bmw K bike owner who has been in warm places with low fuel levels and a dirty petrol filter ...

[This message has been edited by Frank Warner (edited 04 July 2004).]

[This message has been edited by Frank Warner (edited 05 July 2004).]


------------------
Jack
Rockhampton, Australia
__________________
Jack Chomley
Rockhampton, Australia
OR, somewhere in South Africa!
Reply With Quote
  #5  
Old 8 Jul 2004
Contributing Member
Veteran HUBBer
  
Join Date: Jul 2002
Location: Sydney, NSW, Australia
Posts: 1,362
Suggest you contact him - see the site for details. They are not for bms, nor for the inexperienced!

[This message has been edited by Frank Warner (edited 08 July 2004).]
__________________
---
Regards Frank Warner
motorcycles BMW R80 G/S 1981, BMW K11LT 1993, BMW K75 G/S
Reply With Quote
  #6  
Old 9 Oct 2004
Registered Users
HUBB regular
  
Join Date: Oct 2004
Location: Nevada City, CA, US
Posts: 34
Check it out!!!

http://www.powercommander.com/bmwpc.shtml
Reply With Quote
Reply

« Previous Thread | Next Thread »

Currently Active Users Viewing This Thread: 1 (0 Registered Users and/or Members and 1 guests)
 

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
 

Announcements

Thinking about traveling? Not sure about the whole thing? Watch the HU Achievable Dream Video Trailers and then get ALL the information you need to get inspired and learn how to travel anywhere in the world!

Have YOU ever wondered who has ridden around the world? We did too - and now here's the list of Circumnavigators!
Check it out now, and add your information if we didn't find you.

Next HU Eventscalendar

HU Event and other updates on the HUBB Forum "Traveller's Advisories" thread.
ALL Dates subject to change.

2024:

Add yourself to the Updates List for each event!

Questions about an event? Ask here

HUBBUK: info

See all event details

 
World's most listened to Adventure Motorbike Show!
Check the RAW segments; Grant, your HU host is on every month!
Episodes below to listen to while you, err, pretend to do something or other...

2020 Edition of Chris Scott's Adventure Motorcycling Handbook.

2020 Edition of Chris Scott's Adventure Motorcycling Handbook.

"Ultimate global guide for red-blooded bikers planning overseas exploration. Covers choice & preparation of best bike, shipping overseas, baggage design, riding techniques, travel health, visas, documentation, safety and useful addresses." Recommended. (Grant)



Ripcord Rescue Travel Insurance.

Ripcord Rescue Travel Insurance™ combines into a single integrated program the best evacuation and rescue with the premier travel insurance coverages designed for adventurers.

Led by special operations veterans, Stanford Medicine affiliated physicians, paramedics and other travel experts, Ripcord is perfect for adventure seekers, climbers, skiers, sports enthusiasts, hunters, international travelers, humanitarian efforts, expeditions and more.

Ripcord travel protection is now available for ALL nationalities, and travel is covered on motorcycles of all sizes!


 

What others say about HU...

"This site is the BIBLE for international bike travelers." Greg, Australia

"Thank you! The web site, The travels, The insight, The inspiration, Everything, just thanks." Colin, UK

"My friend and I are planning a trip from Singapore to England... We found (the HU) site invaluable as an aid to planning and have based a lot of our purchases (bikes, riding gear, etc.) on what we have learned from this site." Phil, Australia

"I for one always had an adventurous spirit, but you and Susan lit the fire for my trip and I'll be forever grateful for what you two do to inspire others to just do it." Brent, USA

"Your website is a mecca of valuable information and the (video) series is informative, entertaining, and inspiring!" Jennifer, Canada

"Your worldwide organisation and events are the Go To places to for all serious touring and aspiring touring bikers." Trevor, South Africa

"This is the answer to all my questions." Haydn, Australia

"Keep going the excellent work you are doing for Horizons Unlimited - I love it!" Thomas, Germany

Lots more comments here!



Five books by Graham Field!

Diaries of a compulsive traveller
by Graham Field
Book, eBook, Audiobook

"A compelling, honest, inspiring and entertaining writing style with a built-in feel-good factor" Get them NOW from the authors' website and Amazon.com, Amazon.ca, Amazon.co.uk.



Back Road Map Books and Backroad GPS Maps for all of Canada - a must have!

Your ad could be here, on EVERY page of the HUBB, or the whole website, or as many as you like!

New to Horizons Unlimited?

New to motorcycle travelling? New to the HU site? Confused? Too many options? It's really very simple - just 4 easy steps!

Horizons Unlimited was founded in 1997 by Grant and Susan Johnson following their journey around the world on a BMW R80G/S.

Susan and Grant Johnson Read more about Grant & Susan's story

Membership - help keep us going!

Horizons Unlimited is not a big multi-national company, just two people who love motorcycle travel and have grown what started as a hobby in 1997 into a full time job (usually 8-10 hours per day and 7 days a week) and a labour of love. To keep it going and a roof over our heads, we run events all over the world with the help of volunteers; we sell inspirational and informative DVDs; we have a few selected advertisers; and we make a small amount from memberships.

You don't have to be a Member to come to an HU meeting, access the website, or ask questions on the HUBB. What you get for your membership contribution is our sincere gratitude, good karma and knowing that you're helping to keep the motorcycle travel dream alive. Contributing Members and Gold Members do get additional features on the HUBB. Here's a list of all the Member benefits on the HUBB.



All times are GMT +1. The time now is 12:13.

Contact Us - Horizons Unlimited Motorcycle Travellers Website - Archive - Privacy Statement - Top