fuel system KDFI
Turbo Mini Forums

Hi,
I'm installing my KDFI at the moment and have a question:
Can I use the mg metro fuel pump and regulator for injection?
How do I connect it?
Kind regards,
Remko

Edited by remko on 16th Jun, 2012.

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Yes i moved to the darkside

Instagram @jdm_brett

The google picture omits one important point - although a fuel injection regulator should be at the end of the fuel rail as show (ie, after the injectors not before) it should have a third connection, a sensing line, connected direct to the inlet manifold/plenum so as to maintain the fuel pressure at a given pressure above manifold pressure.

This is just as important on a normally aspirated engine as a turbo as the injector flow rate is proportional to the difference between fuel pressure and manifold pressure (which will vary from 0.2bar (abs) to 1 bar (abs) on a normally aspirated and 0.2 to 1 + boost pressure on forced induction).

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

if your in the market for a regulator, I'd recoment the specialist components one, it uses the same gusts as the weber alpha ones but costs less.

Is it ok to use any injection regulator. I have one on the shelf of a 205 1.9GTI. Can I use this?

I'm also looking for different injectors. According to different calculators I would need about 600 cc/min, but I see on other posts 1000cc/min for 120 BHP engines. I hope mine is going to provide 150 BHP. I will go for sequential injection at my KDFI. Is there a mistake in the calculation? Or do I need bigger ones because of the siamese code?

Regards,
Remko

Edited by remko on 16th Jun, 2012.

Yes,

the 205 regulator is essentially the same as the weber and SC ones as they use the OEM bosch reculator, just put into a fancy billet housing.

how are you using the injectors? on a normal 4 cyl 4 injector engine 60cc will be enough for over 300hp, if your doing a 5 port head this can go out the window depending on the setup.

You can use any injection regulator so long as it has the third connection back to the inlet manifold/plenum - without it, it can't regulate fuel to a constant 3bar above air pressure.

If you use the siamese code on a 5 port, as Joe says, all normal rules go out the window.

Siamese code only opens the injectors when the valves are open, so duty goes down from the usual 80-90% to 20-25%.

The figures are all in the write-ups ("build manual") but basically you need much larger injectors (preferably staged) if you run the siamese code (or any other sequential code that fires the fuel only when the valves are open).

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

http://www.jbperf.com/

I use a KDFI ecu (megasquirt software). Its not possible to go for staged injection according to the supplier... I think I will have about 150 bhp with my engine. This means I need about 1200 cc/min injectors. Will this engine run at idle? Where do I get these big injectors?
Kind regards,
Remko

I use a KDFI ecu (megasquirt software). Its not possible to go for staged injection according to the supplier... I think I will have about 150 bhp with my engine. This means I need about 1200 cc/min injectors. Will this engine run at idle? Where do I get these big injectors?
Kind regards,
Remko

I think you will find the KDFI is an un-licenced clone of a complete MS2.

Whilst some of us use a lot of add-on bits to the MS2 (an awful lot in my case) we still use the paid for MS2 daughterboard.

Once you go down the "clone" route, you are unlikely to get any help on any of the forums like this, and certainly not the MS-Extra forum.

I suggest you buy a real one, or at least build starting from a real one if you want any help.

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

i am of the same opinion im afraid,
if you bought the genuine product you could be getting the answers you need from the guys who designed and coded it all, that kind of after service is worth the value of the item its self imo

Yes i moved to the darkside

Instagram @jdm_brett

I dont understand why anyone wants a knock off its not like megasquirt is not cheap already

I bought the KDFI of a dealer in Holland, because I can't make my own megasquirt. I was told this was a good ECU with no need for soldering the complete print and still able to use the megasquirt sofware.

In the end I only want injection and electronic ignition on my Turbo'd Mini Pickup and I thougt thats what this forum is about!

Regards,
Remko

https://www.facebook.com/pages/Fusion-Fabri..._homepage_panel

www.fusionfabs.co.uk



1/4mile in 13.2sec @ 111 terminal on 15psi

On 10th Jun, 2012 matty said:
That makes no sense...just because he hasn't got the 'genuine artical' means that he is not eligible for having his questions answered...all seems a bit clicky to me, after all he is only trying to acheive the same as others!

This is not a megaquirt forum so I can't see why it matters.

http://www.jbperf.com/

On 10th Jun, 2012 matty said:


That makes no sense...just because he hasn't got the 'genuine artical' means that he is not eligible for having his questions answered...all seems a bit clicky to me, after all he is only trying to acheive the same as others!

This is not a megaquirt forum so I can't see why it matters.

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

Genuine ms2 is about £270 built, in ecu terms thats cheap.

Thanx Matty for supporting me...

It was never my meaning to piss people off; I only want to run my mini on a programmable ECU and back in 2009 I bought the KDFI because I can't make my own megasquirt......

KDFI is a system very much used in Holland, very much in autocross. I always assumed it was a proper system, and I still think so!

Off course it's no fun people 'use' your work, but welcome in the world of automotive. A good idea stays hardly ever with the guys who invented it....

Kind regards,
Remko

Whilst Matty might "support" you it doesn't alter the fact that you don't have a Megasquirt (the title of your thread) and those of us who use the real thing on this forum haven't a clue how the "clone" works.

If KDFI is very much used where you are there must surely be a forum/manufacturer website who would help you.

Not that I personally agree with that, but you are wasting your time on a forum that supports the genuine MS2/3.

Just out of interest, I typed KDFI into the MS2-Extra forum search and it came back that anyone who posted threads about KDFI (and another clone) would have the thread deleted and their username banned.....

Perhaps a bit extreme but it shows the feelings on that site.

And I agree a good idea doesn't stay "secret" for long - I think that is how another four letter ECU beginning with "V" came into being, but at least they don't use the same MS code any more...

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

It's not a question of keeping things secret. It is paying for what you use or getting the consent of the people behind the code to use what they create. The MS2/Extra code can only be used on approved hardware because that's how the project can continue.

KDFI is not approved so you can't use MS2/Extra. It is basically the same as pirating other software. If you want the KDFI hardware, just create your own code.

And the fact that it is used a lot in Holland should not be an excuse but should be viewed as a bad thing. And it is the KDFI people that want to keep that a secret because they make money without having to develop or maintain anything. All the improvements come to them for free and they can brag about all the features. Making the hardware is the (relatively) easy part and I assume they copied a good part of it also.

Jean

Edited by jbelanger on 15th Jun, 2012.

http://www.jbperf.com/

Since day one of the mini people have been ripping off each others ideas and marketing them. Downton Janspeed Maniflow, Oselli etc to name a few. Companies came and went. Competition is healthy

Edited by dazibee on 15th Jun, 2012.

On 15th Jun, 2012 Sprocket said:
Don't make the mistake that a lot of MS users make. V&$@# never ever used any MS code, never mind 'any more'. You could argue the idea was stolen, but even then the first generation end result did not compare to the MS, and the current product is a not even a shadow of MS. The only comparison that could have been made was that they both used Megatune, at least for a while.

http://www.jbperf.com/

http://www.jbperf.com/