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Post Info TOPIC: 2003 Hayabusa


Veteran Member

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Posts: 44
Date:
2003 Hayabusa


Hi all, I just stumbled across this site and am impressed with the ability to remap the ECU's.

My question is that I have a 2003 Hayabusa in Australia and I dont know if my ECU is 16 or 32 bit so how do I tell?

I am keen to know if the clutch in rev limiter can be set to approx 5000rpm to use it as a drag race launch control?

I am no genius but i am handy on a pc and a soldering iron so am very keen to have a crack at flashing the ECU. Is there any major risks for a noob to this area?

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Guru

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Posts: 2338
Date:

Hi,

Generally the 32bit hayabusa ecu:s are about 1cm thick where as the older 16bit ecus are about 2cm thick from the non connector end.

You could drop the ecu label back to the hayabusa area on this board and we could take it from there.

If its 32bit ecu and the firmware is compatible, then this is possible with your own risk ...

If you just want to keep the revs down thats easily doable... Please note that there is over 30 different RPM limiters and you may not want to drop the ones which cuts 50% of the fuel off from the outer cylinders.

There may be also additional launch control methods, like:
- An opportunity to use the secondary fuel maps to keep the nose down during startup if a microswitch to the front shocks is allowed ...
- Different ignition maps for gears, those can be more retarded for first couple of gears...



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Guru

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In the US all bikes after 2001 are 32 bit so I'm 99% sure your 2003 is a 32bit also.

As for risks they are just the usual, death and dismemberment. ;)

http://www.bikeland.info/7.html

I don't know how much of the forum you have read but what it comes down to is that if your the SECOND guy to want to modify a 2003 AU market ECU then the job is relatively easy. However if your the FIRST its a lot more involved.

What it comes down to is this. You can WRITE to the ECU through the wire harness without opening up the ECU, but you can't READ it. And if you can't read it then you have nothing to modify and rewrite to it. The first guy is going to have to open up a 2003 AU ECU and pull the code out of it. Once the first guy makes the code public then the second, third, etc guy can use it to modified any other, unopened, 2003 AU ECU.

Do you want to be that first guy? It is not really expensive or difficult to be the first guy, just kind of scary if you've never done it before. But we are here to help :)

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Guru

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Posts: 2338
Date:

In EU they changed the ecu in intermediate due to emission law change and the rumour is that the exact change is somewhat country dependent, so 2001-2003 firmware is proven to be compatible. From K4 onwards we have quite good guess that its compatible over here. Before that may not.

I am sure that Bozo could help by reading the AU firmware just in case if the serial number differs ?




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