JoaoCaldeira
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| posted on 19/7/06 at 10:19 PM |
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DigiDash rpm reading (yes... again)
Hi all....
I'm having a few problems.
Digidash 2 Lite (4.17)
2003 R1
I've connected the DD yellow wire to the orange/black (ECU Nr.8) aka injection
The problem is when it is reading, it reads correct (at least almost) - I've used the PowerCommander pc interface to compare.
But some times it just stops reading, displaying the last rpm it gathered; usually this happens when the rpm change is marginal - up to 100 rpm per
second - but in the end it leaves a huge gap to reality.
If I give it a few hard presses on the right foot he starts reading again... ujntil it stops 
Anyone had these symptoms?
Joao
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RichieC
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| posted on 20/7/06 at 06:19 AM |
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As far as I know Joao, the RPM feed which would go to the clocks is mixed with the diagnostic info aswell. Therefore, some users have found prblems
with using that for the RPM feed.
Try it directly from a HT cable to compare
Rgds
Rich
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tks
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| posted on 20/7/06 at 07:40 AM |
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digital / analog dash
I think that the dashboard is only 100% analog or 100% digital
the digital signal wouldn´t be usefull for the digidash sow if it reads correctly i would say its analog.
then you have to search for the problem now..
Tks
The above comments are always meant to be from the above persons perspective.
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progers
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| posted on 20/7/06 at 07:41 AM |
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Joao,
The solution for the 2003R1 is to get a small converter box from ETB that conditions the feed from the coils. i.e. low level signal from ecu goes in
this box and is transalted into a nice fat square wave which the digidash has no problems reading. They now have this available.
Using the injector wire is not ideal although it may work. I have the feed from the coils and it does the same as you describe - it freezes at low
rpm. At higher rpm its OK.
Apparently this only affects the 2002/3 injected R1 as the signal from the ECU is much lower than other models (and other manufacturers).
- Paul
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ChrisGamlin
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| posted on 20/7/06 at 09:56 PM |
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I noticed the other day that mine does the same at low revs, it was saying ~1900rpm when in reality it was idling at 1000rpm as confirmed by plugging
in the Yamaha clocks.
I'll probably re-wire it when I do the Phoenix, but its not a big problem really, as long as it read OK at high RPM.
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furyblade35
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| posted on 21/7/06 at 12:49 PM |
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Paul is correct in that on some R1 models the drive to the electronic coils is very different to all other engines, coils and ECUs encountered to
date.
Becasue the R1 has debug information on the ECU output for RPM then I would suggest:
1) use injection wires.
2) use a signl conditioning box from ETB that cleans up the signal. This box will only work for R1 applications.
The freezing is really the dash saying "hold on, I'm dropping pulses because the drive signal is not within range, don't start
flapping the RPM reading about, hold the last one until we have some decent data to work with", hence the freezing....
Al.
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progers
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| posted on 21/7/06 at 02:18 PM |
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Hi Al,
I presume you mean
2) Use the coil feed with the signal conditioning box ?
i.e. not injection wires with conditioning box
Just thought I would clarify
Cheers
Paul
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Bob C
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| posted on 21/7/06 at 09:52 PM |
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injection wires should have a pulse per bang just like ignition ones - but the pulse should have a nicer waveform..... Downside is pulse duration
varies a lot (controlling amount of petrol) & some may not inject at all on overrun!
Bob
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