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Home > Show Us Yours! > Fuel injected 'A' Series 998 with MS and sequential siamese code

Graham T

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Post Whore

Hungerford, Berks

13th Mar, 2010 at 04:15:11pm

ok, I'll explore both avenues.
Now for some more smoke fumes.
And some live feed back, if my WIFI is strong enough to keep connected in my drive.

’77 Clubman build thread
http://www.turbominis.co.uk/forums/index.php?p=vt&tid=618189

Siamese 5 port EFI testing
http://www.turbominis.co.uk/forums/index.php?p=vt&tid=611675


Paul S

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Formerly Axel

Podland

13th Mar, 2010 at 04:46:24pm

I didn't mean single pulse when I said single table. I'm using single pulse for the reasons Rod says, but you should try to stick with two pulses, one per cylinder.

I meant to suggest using just a single timing table. The code then automatically set the pulses 180 degrees apart on each port.

So under the Sequential Injection menu, set it to mid-pulse, use table, single value. That way Injection Timing tables 2 & 3 are not used.

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."

Rod S

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Rural Suffolk

13th Mar, 2010 at 05:32:21pm

Sorry, my fault, didn't read it properly *frown*

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

Paul S

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Formerly Axel

Podland

13th Mar, 2010 at 05:50:41pm

On 13th Mar, 2010 Graham T said:
Paul, you suggest 45deg, so that will start 45deg BTDC?? Are you using mid-pulse or start of pulse?


Acyually you will probably find that is too high.

The thing to be aware of that with theose spray injectors, the transit time in the port will be around 90 to 130 odd degrees.

So if you use 0 at idle, that should hit the valve mid stroke. Something around 40-50 degrees should work at WOT.

EDIT: Confusion reigns. I blame my age.

I've just been through all the old trials and checked back in the msqs and it seems that I was running around 90 degrees injection timing at idle when I was running two MPI injectors. That inreased with load and speed.

Edited by Paul S on 13th Mar, 2010.

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."
Home > Show Us Yours! > Fuel injected 'A' Series 998 with MS and sequential siamese code
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