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PostPosted: 07 Feb 2010 23:22 
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You have a PM :roll:

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PostPosted: 08 Feb 2010 06:29 
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proff. patpending
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OK OK BREAK IT UP.... :twisted:

On the GB231 and IB310 ECMs, of which the one originally fitted to your bike will be one of the two, there is a spade connector in the middle of the Black and the Grey connectors. This is the Adaptive Muffler Control, the signal that tells the motor what to do.

The 9 and the 12 share the same ECM and the same wiring loom for "economies of scale", or cost cutting purposes to you and me. The bits and the bytes inside the ECM are different and not all the plugs on the loom are used. The white wire that goes to the spade connector in the middle can be traced on yours to a triangular plug with a rubber bung in under the driver's seat on the left hand side, of the bike (driver looking forward). The rubber bung is there cos there is no AMC (exhaust valve) on the 9. This white wire goes nowhere else and it you put a multimeter on, you can see it is connected from the spade terminal to the triangular plug.

The ignition retard function is controlled by a configuration byte in the ECM that tells it what to do (see below), where the bit second from the right is set to 1, the ECM looks to see what the throttle position is, then the vehicle speed and the engine speed; if the throttle is wide open (WOT) and the ratio of the vehicle speed to the engine speed is within the range of two other numbers in the ECM, the ignition is retarded. This is located at byte 0x194 in the ECM. And I also cobbled together a diagram to show you what happens to the ignition timing.

And finally, there is a bit of the wiring diagram which is for a 12, but it shows the connector we are talking about. It also shows the VSS at pin 8 on the grey connector, and this is the one you want... If the ECM doesn't know how fast you are going, it thinks you are stopped, and therefore your VSS/RPM ratio will always be zero, i.e. below the threshold for retarding the ignition.

As for the Race ECM.... I think the Race ECMs on the 9 can be either CB060 (older) or GB231 - you can see what yours is by reading the text above the bar code sticker on the top face of the ECM. The CB060 was made before the need for an AMC valve (before the 12) and only appears on the 9s. It will therefore have no spade terminal in the middle. The configuration byte on a Race ECM is set to all zeros, so the "Activate on WOT transition" is set to zero, i.e. not active.

The earlier 9s, 2003 and 2004, had a CB060 ECM for the street (not a Race ECM, although it was effectively the same box but with different flash or 1 and 0s inside). This has no spade terminal as I said, however it still has the noise abatement logic to retard the ignition.

Feel free to discuss it with Birmingham HD and let me know if you need more info.


Attachments:
noise abatement config byte.jpg
noise abatement config byte.jpg [ 14.9 KiB | Viewed 712 times ]
ignition logic.jpg
ignition logic.jpg [ 34.8 KiB | Viewed 712 times ]
ECM plugs.jpg
ECM plugs.jpg [ 104.72 KiB | Viewed 712 times ]

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PostPosted: 08 Feb 2010 13:12 
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parasexas wrote:
b16_4ndy wrote:
Big lad i wouldnt argue with mr maz, he knows his shit. his sense o humour might wind u up but theres nobody in this country that knows more about buells

i ain't saying he doesn't know. thing is, I don't know him, so better stick with respectable mechanics opinion rather than somebody online whom i never met. another thing, dealers don't do anything not by the book. single white wire was explained to me as it ads more fuel after you unplug itand not recomended till run in you engine (1K+ miles).




Out of interest, what is the name of the Mechanic who has told you this?

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PostPosted: 08 Feb 2010 19:43 
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:hehe: :hehe: :hehe: :Dummy: :hehe: :hehe:

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PostPosted: 08 Feb 2010 19:50 
thanks all your info and help.


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PostPosted: 09 Feb 2010 00:24 
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parasexas wrote:
thanks all your info and help.


go and fuck yourself :D only joking :D

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PostPosted: 09 Feb 2010 09:02 
Well my personal opinion is that a apology on here is needed..Maz was only trying to help and abuse was not called for.

Potts


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PostPosted: 09 Feb 2010 09:24 
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:yt: :clap: :clap:

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PostPosted: 09 Feb 2010 11:45 
rev potts wrote:
Well my personal opinion is that a apology on here is needed..Maz was only trying to help and abuse was not called for.

Potts

there was no abuse towards Maz :roll: . however i did apologise him PM :!: . all i was looking for is right ansver as i have been confused :? . reagarding wording between me and Kevmean i'm ready to say it to his face what was said here. he's very arogant and rude and earned a good punch to his big nose :nutkick:


Last edited by parasexas on 09 Feb 2010 19:01, edited 1 time in total.

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PostPosted: 09 Feb 2010 12:22 
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Is there some way to migrate Maz and Pash's responses over to the white wire mod thread and bin the rest of this (or at least x it from tech?)

I do not own a 9, so I never looked at a tech thread about a simple operation on a 9. But the farkin' thing kept coming up: 2 pages! What's up, I say? Sorry I looked... :sad1:

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PostPosted: 09 Feb 2010 16:29 
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proff. patpending
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I'll look into it...

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PostPosted: 09 Feb 2010 17:48 
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parasexas wrote:
reagarding wording between me and Kevmean i'm ready to say it to his face what was said here. he's very arogant and rude and earned a good punch to his big nose :nutkick:


You havn't even met me ....................who grassed me up about my big nose :shock: :shock: lOl lOl lOl

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PostPosted: 09 Feb 2010 19:23 
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proff. patpending
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Motorrad wrote:
Is there some way to migrate Maz and Pash's responses over to the white wire mod thread and bin the rest of this (or at least x it from tech?)

I do not own a 9, so I never looked at a tech thread about a simple operation on a 9. But the farkin' thing kept coming up: 2 pages! What's up, I say? Sorry I looked... :sad1:


Only cos it's you... :D

viewtopic.php?f=17&t=11&p=354#p354

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