Hayabusa problems

Anyone encountered this out there?

Since I got the busa in Melbourne a few months ago, it has been
hesitating at low throttle settings. I didn't notice it on the test
ride but certainly noticed it when I picked up to bring back here. I
thought at first I was fouling plugs in Melbourne traffic but it
hasn't gone away.

I phoned Peter Stevens at Ringwood where I bought it and they said it
was due to the Yoshi cans that were on it (2nd hand 2000 model) and
that it needed to be remapped ...

Anyway - took it to a good mechanic here who has a dyno and the gizmo
to remap the Soozook pooter and it didn't fix it. The bike went better
but it still hesitates as you open from low throttle settings. I was
told that there wasn't fine enough mapping available on the standard
ECU and that I should put a Power Commander in so he can set those low
throttle settings.

I find this all a bit weird. Surely everyone that sticks cans on a EFI
bike these days doesn't have to go through this? Anyone else put
Yoshis on a busa without problems?

I'm inclined to just find some stock cans and put them back on ...

Thoughts folks?

Cheers



-------------
Kevin Gleeson
Technical Director
Blue Rocket Productions
Hobart, Tasmania, Australia
www.blue-rocket.com.au

 

I'll check them out.

Been down the tweaking route and find that you are perpetually chasing
your tail, change one thing, something else needs changing ...

That's what I keep telling myself, but I also use it as a commuter and
that's where it is a pain (ie - every day). Out at lunchtime for
instance, following a car up through the city and I open the throttle
just a tad to pick up a few k's and the bike actually slows down a
little then fires up - it's not extreme, just annoying. Pain in the
arse in tight corners in the wet (ie roundabouts).

Have you got cans on yours Paul?

I'm prepared to go down the Power Commander road, but only if I can be
sure it'll fix the problem. The mechanic said he'll fit and dyno the
PC for free for me (because he was sure the remapping would work and
it didn't, so he said he'd get it working) but it's still an outlay of
$700-$800

Cheers



-------------
Kevin Gleeson
Technical Director
Blue Rocket Productions
Hobart, Tasmania, Australia
www.blue-rocket.com.au

 

Take yer hand off the brake!

Hammo

 

Check out www.doinbikes.com.au and make sure if you're going to get it
remapped with the PC that you get someone with a load test dyno and the
Tuning Link software. This should completely erradicate your bogging down
problem at low revs and smaller thottle openings. It's obviously a fuelling
problem caused by the yoshi pipes. The stock ECU's are pretty lame when it
comes to compensating for them, and they're also usually lean at the usual
4k mark for emissions and sound testing.

Cam
'00 ZX6R

 

Now, if it was a BMW I'd be suggesting you check the TPS is
zeroed correctly. No idea if that's the same on the Chickenhawk.

-----sharks

 

Mate, bad luck, that's a standard thing with non-Hondas.


That'll learn ya.


tm









*** No preguntes lo que tu pais puede hacer por ti, pregunta lo que tu
puedes hacer por tu pais. ***

 

Take yer hand off ....

Arrghhh too late

Cheers


Kevin Gleeson
Imagine It
West Hobart
Tasmania Australia
www.imagine-it.com.au

 

That did come up earlier and we checked it, I don't believe that is
the case, it really feels like a bad fuel/air ratio at that throttle
setting.

Cheers


Kevin Gleeson
Imagine It
West Hobart
Tasmania Australia
www.imagine-it.com.au

 

Hiya Kevin
Though I don't own a Hirebus, I have heard that they don't like
aftermarket pipes without having the ECU played with.
Putting on the standard mufflers back on has it's own proplem, I beleive
the linkpipes have to be cut to remove the standard mufflers so that your
Yoshis can be fitted, Makes refitting the standards a problem, Don't quote
me on this, Just something i've heard.

 

What are you doing using low throttle settings for anyhow ?
It's a Hayabusa... ride it like one

Nev..
'02 CBR1100XX 4 sale; ZX12R coming any day now...

 

What? Straight into the back of the taxi in front of me?

Cheers



-------------
Kevin Gleeson
Technical Director
Blue Rocket Productions
Hobart, Tasmania, Australia
www.blue-rocket.com.au

 

Hmm - fair enough.

Although I'm getting enough replies now that make me think the PC will
fix it ...

Cheers



-------------
Kevin Gleeson
Technical Director
Blue Rocket Productions
Hobart, Tasmania, Australia
www.blue-rocket.com.au

 

Worked for Nev
He rode his into the front fender of a Colt.

 

Ahh - so _that's_ what caused it then?
(Methinks that he couldn't see the Colt due to the fact his front
wheel was at eye level

Cheers


-------------
Kevin Gleeson
Technical Director
Blue Rocket Productions
Hobart, Tasmania, Australia
www.blue-rocket.com.au

 

Kev, if the battery was disconnected on the injected R1100/1150BMW's, the
bike would be twitchy and surge-y on small throttle openings after
reconnecting. The thing to do was to turn the ignition on but not start it,
then open the throttle fully three times, turn off, then start normally. It
resets things, but is most noticeable on small throttle openings.

Would cost nothing to try it on the Hairybush.

 

Can't hurt - I'll give it a go

Cheers




-------------
Kevin Gleeson
Technical Director
Blue Rocket Productions
Hobart, Tasmania, Australia
www.blue-rocket.com.au

 

Oh, and I forgot.....you need to read the entrails of a sacrificial goat,
too!

 

Cliffykins? I thought we sacrificed him years ago?

Cheers




-------------
Kevin Gleeson
Technical Director
Blue Rocket Productions
Hobart, Tasmania, Australia
www.blue-rocket.com.au

 

Kev, I think what Hammo is trying to say is that you should have stuck
with the Honda mate

John

 

paulh said....

pa> Very likely...

Isn't the idea of the EFI and computerised engine management systems is
to be able to cater for such changes? ie: adjust the fuel/air mixture as
sensed in the exhaust gases, etc.?

Or don't the modern bikes with EFI have this capability?