Hotrodding the GS - Page 3

Poolside · 11-20-2010, 10:35 PM

Yea, it plugs right in!

I'm thinking it was need. I finally just had enough of the 80's era Motronic ECU.

Adrian7073 · 11-21-2010, 08:10 AM

Hows CAN BUS feel about about this?

lhendrik · 11-21-2010, 08:44 AM

I missed the CAN BUS so I took the CAN TAXI. What exactly are we talking about here, tuning a BMW engine? Sounds great. Where to I sign up?

Synisalo · 11-21-2010, 09:55 AM

Quote:

Originally Posted by Poolside

Just another day at the office.

So the question Begs to be asked... How are you going to weatherproof all that?

Seriously, thats an awesome project, Wish you all the Luck getting it to production phase!

GS Addict · 11-21-2010, 11:05 AM

BerndM · 11-21-2010, 12:30 PM

Sounds REALLY interesting!!

How well do you think your mods will apply to my 05 R1200 RT??
Higher compression than the GS, 12/1 vs 11/1.

Regards

Bernd (in Orange County)

scooteraug02 · 11-21-2010, 01:03 PM

Isn't someone supposed to chime in with:

"Don't you think the BMW engineers know more about this bike than anyone else and built it with the latest greatest..."

Copy the Ducati 1200 Multistrada computer that way we can have 150hp in sport mode.

Spoke · 11-21-2010, 02:36 PM

johnjen · 11-21-2010, 04:06 PM

All of these mods we're going to make available, deal directly with the fuel injection system and it's foibles. This particular approach to engine mods has only been lightly touched upon thus far. We intend to dive into the deep end of this pool and 'make some waves'.

As such this first device can be used with any of the motoronic EFI based motors and the newer 1200 EFI system as well.

But the next few mods after this first one will initially be for the motoronic efi based bikes, with the canbus equipped bikes following a little later. Mostly due to the added complexity of talking to the 1200's ECU.

We will be filling in more of the specific details and the results of his research in subsequent posts. We will try to present a complex situation (the algorithm used to run the engine) in a simplified way by describing key specific operational portions of the program one at a time. Then we will tie them together to show how they interact and how we can optimize each of these operational areas to achieve a much better running engine.

It may seem like rocket science, only because,

it is…

JJ

wrysingfeenix · 11-21-2010, 04:21 PM

In a word...

YOUDAMEN!

TrainedChimp · 11-21-2010, 04:34 PM

I don't have anything to add to this thread but I wanted to post just to express my interest in the work at hand. Very cool.

drcool · 11-21-2010, 04:39 PM

I can't wait for the Beta test in the frozen North( or at least the Banana Belt

).

It was about 40f here today and my 1150 always runs better in the cold. Surewould be nice if it felt like that all the time.

drcool

wgrant · 11-21-2010, 08:39 PM

16 year old Motronic 2.2 with 90,000mi. I'd like a complete modern replacement ECU. I know, pie-in-the-sky...back to reality, count me as very interested. Thanks for your efforts!

Wayne

Poolside · 11-22-2010, 03:45 AM

Quote:

Originally Posted by wgrant

16 year old Motronic 2.2 with 90,000mi. I'd like a complete modern replacement ECU. I know, pie-in-the-sky...back to reality, count me as very interested. Thanks for your efforts!

You bet. Not so pie-in-the-sky as you might think. You can get virtually the whole way there with external mods.

That 16 year old Motronic was born in the 80's. The version in the 1100/1150 is called a Mono Motronic It was designed for throttle body (single injection point) fuel injection systems. It was re-labeled simply Motronic as the OE product for the BMW boxer motor.

Because of the 180° opposed cylinder arrangement on the boxer motor, the Mono Motronic ECU can be operated as if it's controlling a single cylinder motor running at twice the RPM.

The primary problem with the Mono Jetronic is that BMW used it to control 2 injectors with a single injector signal. The method is commonly referred to as batch injection. It is sort of like wasted spark ignition, only for fuel.

That's ok for spark control, but it leaves a lot to be desired from a fuel control point of view.

Poolside · 11-22-2010, 03:52 AM

Quote:

Originally Posted by Adrian7073

Hows CAN BUS feel about about this?

I know what you mean

As JJ said, there's a few devices, and they work together. The second one picks up where the first one leaves off, etc.

The first one works on all the boxers. The second one has an 1100/1150 version, and a 1200 version. The 1200 version is part of the CANbus.

11-20-2010, 10:35 PM	#31
Poolside ^OP Syndicated Joined: Apr 2003 Location: Long Beach, CA Oddometer: 11,286	Yea, it plugs right in! I'm thinking it was need. I finally just had enough of the 80's era Motronic ECU. __________________ IICE Air Hotrod your GS Fuel Injection Tech Info Buy Order List

11-21-2010, 08:10 AM	#32
Adrian7073 Adventurer Joined: Sep 2010 Location: Portland OR Oddometer: 56	Hows CAN BUS feel about about this? __________________ 07 R1200GS 75 R90/6 04 749S

11-21-2010, 08:44 AM	#33
lhendrik Truffle Rustler Joined: Dec 2008 Location: New York and Floridoodie Oddometer: 1,942	I missed the CAN BUS so I took the CAN TAXI. What exactly are we talking about here, tuning a BMW engine? Sounds great. Where to I sign up? __________________ Normal is just a setting on the dryer. Armageddon was yesterday - Today we have a serious problem. 2009 R1200GS Adventure 2008 K1200GT

11-21-2010, 11:05 AM	#35
GS Addict Pepperfool Joined: Sep 2006 Location: British Columbia Oddometer: 2,567	__________________ Old enough to know better.... Young enough to try it again

11-21-2010, 01:03 PM	#37
scooteraug02 Dog Rancher Joined: Feb 2003 Location: Atlanta, GA Oddometer: 4,181	Isn't someone supposed to chime in with: "Don't you think the BMW engineers know more about this bike than anyone else and built it with the latest greatest..." Copy the Ducati 1200 Multistrada computer that way we can have 150hp in sport mode. __________________

11-21-2010, 12:30 PM	#36
BerndM 2005 R1200RT Joined: Aug 2007 Location: Near Disneyland, in SoCal. Berlin, Deutschland. Oddometer: 1,375	Sounds REALLY interesting!! How well do you think your mods will apply to my 05 R1200 RT?? Higher compression than the GS, 12/1 vs 11/1. Regards Bernd (in Orange County)

11-21-2010, 02:36 PM	#38
Spoke feral teen Joined: Jun 2009 Location: Upstate NY Oddometer: 666	I'm listening __________________ Rich It entered my blood in 1970 on a Honda QA50

11-21-2010, 04:06 PM	#39
johnjen Mod-U-Later Joined: Nov 2001 Location: Seattle Oddometer: 13,506	All of these mods we're going to make available, deal directly with the fuel injection system and it's foibles. This particular approach to engine mods has only been lightly touched upon thus far. We intend to dive into the deep end of this pool and 'make some waves'. As such this first device can be used with any of the motoronic EFI based motors and the newer 1200 EFI system as well. But the next few mods after this first one will initially be for the motoronic efi based bikes, with the canbus equipped bikes following a little later. Mostly due to the added complexity of talking to the 1200's ECU. We will be filling in more of the specific details and the results of his research in subsequent posts. We will try to present a complex situation (the algorithm used to run the engine) in a simplified way by describing key specific operational portions of the program one at a time. Then we will tie them together to show how they interact and how we can optimize each of these operational areas to achieve a much better running engine. It may seem like rocket science, only because, it is… JJ __________________ QUOTE from vermin I lie to myself because I am the only one who continues to believe me.

11-21-2010, 04:21 PM	#40
wrysingfeenix Dust off those ashes Joined: Sep 2003 Location: Desert Southwest Oddometer: 588	Poolside and Johnjen In a word... YOUDAMEN! __________________ Nothing lasts, nothing is finished, and nothing is perfect. That being the case, how then shall I proceed? '99 BMW R1100GS '00 H-D FLHRI Road King

11-21-2010, 04:34 PM	#41
TrainedChimp Consistently wrong Joined: Sep 2008 Location: Idaho Oddometer: 175	I don't have anything to add to this thread but I wanted to post just to express my interest in the work at hand. Very cool. __________________ "Fools congregate." TrainedChimp screwed with this post 11-21-2010 at 07:08 PM

11-21-2010, 04:39 PM	#42
drcool R.I.P. Dave Joined: Oct 2007 Location: Burlington, Canada Oddometer: 3,072	I can't wait for the Beta test in the frozen North( or at least the Banana Belt ). It was about 40f here today and my 1150 always runs better in the cold. Surewould be nice if it felt like that all the time. drcool __________________ Originally Posted by Isplat2 "When ALL the movies, video's and home theater is in 3D ....porn will become a whole lot different...." Trailering your bike is a sickness, for help.....Call 1-800-scaredtoride

11-21-2010, 08:39 PM	#43
wgrant Rambler Joined: Nov 2006 Location: KC Oddometer: 7	16 year old Motronic 2.2 with 90,000mi. I'd like a complete modern replacement ECU. I know, pie-in-the-sky...back to reality, count me as very interested. Thanks for your efforts! Wayne

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