charlie_pank
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| posted on 23/2/10 at 12:42 PM |
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Injected 06 R1 - tricking the ECU
1) What do I need the ECU-controlled throttle for and is there a way to run without it? I'm concerned that if I just take it off, the bike will
go into limp-home mode, if I relocate it so the ECU still thinks it's there, but it doesn't actually control the throttle, then the ECU
will not be able to give the correct fueling.
2) What does the 'speed-sensor' mounted near the sprocket do, and is there a way to run without it?
3) Is there a way of tricking the ECU into thinking its got an EXUP valve attached, so it doesn't go into limp-home mode? (If so what is it?)
Ta
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ko_racer
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| posted on 23/2/10 at 01:49 PM |
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If the 2006 R1 is a 5VY which it should be,
Not sure there is a limp mode as such, just fixed values for a sensor if it has been removed, never been an issue for us.
1. You can remove all the butterflies from the the secondary throttle, you will need to leave the motor and TPS connected or you may run into
problems.
You will need to remap anyway so fueling won't be a problem. It's only to improve low/mid-range throttle anyway.
I've left them there though myself.
2. You can run without the speed sensor without problem, we've actually seen a speed limiter on the dyno on these engines which was bypassed by
disconnecting the speed sensor.
3. For the exup just unplug it, it does nothing to the fuelling as far as we can tell from dyno and track work. You'll get an error if you have
the dash, but it won't do anything else.
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A1
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| posted on 23/2/10 at 01:50 PM |
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why do you want to take the ecu off?
just leave the exup motor on, itll be fine. if you unplug it youll get the fault code.
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charlie_pank
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| posted on 23/2/10 at 01:59 PM |
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Thanks for the replies. I don't have an EXUP valve, or the speed-sensor, or the tip-sensor so I'd rather not have to buy them if I
don't have to.
Interesting what you say about the servo-controlled throttle, I assumed that the ECU would base some of its fueling decisions on the position of the
servo controlled throttle?
A1, I think there might be a mis-communication, I'm not trying to get rid of the ECU (yet), just trying to trick it into running without some of
the sensors that I don't have.
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adithorp
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| posted on 24/2/10 at 09:57 PM |
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Are you using the bike dash or an aftermarket one?
If the bike dash then missing EXUP or speed sensor will throw up a fault on t he dash (and the speedo wouldn't work). There is a widget you can
make to con the ECU that the EXUP is still there. A search in this section/with my user name should find it.
If an after market dash, then just remove them.
adrian
"A witty saying proves nothing" Voltaire
http://jpsc.org.uk/forum/
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Gergely
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| posted on 26/2/10 at 10:29 AM |
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You don't need to remove the ECU. You need a Power Commander to take care of the air/fuel mixture, but leave the ECU on.
No need to use the EXUP either, unless you use the bike's clocks.
Take a good read this page, although a slightly different engine, exactly the same procedure is required.
Link
Start the engine with the loom completely in place and bit by bit remove the pieces you don't need.
You will need to trick the kick stand, stop switch and the lean angle switch on the bike loom.
Gergely
Our build pictures
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