BMW K1100/K100 Fuelling Discussion
Turbo Mini Forums

How do the throttle bodies work on a BMW K Setup??

Im looking to building a K100 Engine as a little side project, however i was wondering what the setup was with injection side of things.

What controlls these? Do i need a lamba in the exhaust??Do i need MS.

Edited by MikeRace on 8th Jan, 2009.

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/

You are going to need an ECU, sensors, injectors and a 3 bar fuel system.

For starters, get Dave Walkers book on Engine Management by Haynes.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Is it not possible to use the BMW Rail and injectors??

What ECU Do i need?? The original from the Bike.

Also i was planning on using MJLJ?

Ta

Mike

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

you can use the bmw rail yes, most do, injectors may be a little on the small side. You want a mapable ECU, so the BMW is no good, Megasquirt, or something will do you.

Team www.sheepspeed.com Racing

oops crossed posts. Don't also forgot the off the shelf ecu's, Emerald, OMEX, DTA, Motec etc.

Rememeber, the ECU is only as good as the person that maps it. If you can't map the ECU yourself, make sure you get an ECU where the rolling road your going to take your car to knows the software for your ECU.

IMO this is the only downside with the DIY ECUS's Megasquirts etc, as most rolling road operaters turn there nose up at them, even know they do the same job as any other ECU.

Team www.sheepspeed.com Racing

And i gather i need a Lamba? Any Type?? Wideband or Narrow?? Or is there no difference? I gather i only need one in the exhaust system?

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/

widebands best,

i like the vms one with the gauge.

So aside the engine cost the Injection will be a fair lump as well.

Ive had a fair bit of use with the MJLJ on the Tangerine Turbo and ive gotten pretty good at this.

Just been on this site

http://www.megamanual.com/index.html

And i must admit the MJ was much more user friendly, easy to follow install guides ect ect.

How hard compared to installing an MJ is the MS or VEMS??

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/

I'll tell you whwn I've finished :)

Seriously though, you need a reasonable bit of electrics/electronics knowledge to wire it all up even if you buy a pre-built unit and obviously be OK on the PC, but as you've done MJ the PC part shouldn't be an issue.

Or take it a stage further and build your own (which obviously needs a bit more expertise on the electronics side) and costs really come down.

I've built my MS and two TechEdge wideband controllers and displays from kits and no problems so far, I just haven't finished welding up the Mini to put it all in.

For the Lambda, go wideband then you can get MS (and some of the others) to do the basic mapping itself (OK, that's being a bit simplistic before anyone picks me up on it, but narrowband is a waste of time IMO).

Schrödinger's cat - so which one am I ???

Rightho, ive built my own Rev Light Cluster before, the kit from AutoSportsLabs with the 20 odd Leds and the small Resistors and had no problem what so ever.

Only problem i can see with something like the MS is if I do build my own and it doesnt work....where do you start lol.

Anyone got any good links to some VEMS sites? And whats the difference between VEMS and MS?

Sorry for all the questions.

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/

unless your pretty hot on electronics i'd strear clear of MS, it is good but really is aimed at "dablers"

the vems is a good bet espcially as BAT is doing looms at a reasonable price.

if you want fit and forget with no fitting isues then go for SC's cyclone.

I chose MS because, at the time, it was the only potential solution to the siamese code problem.

I would now always use MS because I am familiar with it. I found it easy to set up and get running. I've also found it easy to add extra circuits and modify it.

If I was in your position, Mike, I would probably have gone with VEMS as it can be cheaper. There is now good support on here with Sprox and Matty running them on K headed engines. Bat is selling them I believe.

The main selling point of the VEMS is the on-board wideband controller, meaning that you can just fit a wideband sensor, whereas with MS you need a separate controller. However, if you want a decent O2 gauge with VEMS, then I think you need to buy extra kit.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Only problem with the Cyclone is the price.

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/

Schrödinger's cat - so which one am I ???

Schrödinger's cat - so which one am I ???

One needs to be diplomatic on such subjects.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Schrödinger's cat - so which one am I ???

i may be wrong but i think i am the only one here with omex?

i have been over the moon with my omex, its been reliable and the RR operators have mapped it well the last time by slarks who tweeked it so it drove from idle in second! Emerald would be my choice now though just to have someone like dave walker at the end of the blower

Wolfie you avatar has totally distracted me!

My requirements are low cost, not daft difficult to install and setup. Im not overly bothered about super fancy gadgets as its goin in the Cooper S, which im trying to keep a period look on things, Interior wise. So Standard Clocks ect ect

Thanks for the Input thus far chaps. How much does Bat charge then??

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/

Edited by sturgeo on 8th Jan, 2009.

depending how "period" you want it to look you could always run carbs and a dizzy!

If something is worth doing, it's worth doing half of.

What Carbs?? Or Carbs and MJ

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/

DCOE 40's/45's

I think Morspeed "SHUDDER AT THE THOUGHT OF SUGGESTING THEM!" do a 1" Weber manifold which fits under a standard round nose.

Maybe someone else does too?

Then you could use Dizzy/MJ or whatever you like for ignition.

If something is worth doing, it's worth doing half of.