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Junior Mint
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 Post subject: Zoomed Struggling with Yoshimura Exhaust
PostPosted: Wed Jul 26, 2017 4:42 am 
So I fitted a carbon Yoshimura exhaust to my Zoomer, I'm in the uk and have a FI one. I also used the blank for the lambda sensor.

Fitted it last night and it started off the kickstarter fine as usual, although I didnt ride it till today but having now rode it this morning, not only was it a nightmare to start to 50 kicks at least but it also ran really really slow on acceleration and had like no top end, usually would hit 30 no bother before with standard pipe.

Ive had a search and can't see anything similar and also can't figure out why it would run fine but then run like shit the next day.

I had read that you need to rejet then but thats me assuming that its a carb'd model which it isn't.

Running a Variator thats all in it.


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Junior Mint
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 Post subject: Re: Zoomed Struggling with Yoshimura Exhaust
PostPosted: Thu Jul 27, 2017 9:20 am 
Also took it proper run today with it fitted and it struggled to get up to speed when at like 30mph it started like coughing and spluttering as of the fuel wasn't being injected quick enough! Swapped back to started one with lambda fitted and it back to normal and back up to speed.

Should I get the Yoshi fitted with the lambda sensor?


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Sith Slayer
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 Post subject: Re: Zoomed Struggling with Yoshimura Exhaust
PostPosted: Thu Jul 27, 2017 10:37 am 
it would need that to run right with FI

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Shot Caller
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 Post subject: Re: Zoomed Struggling with Yoshimura Exhaust
PostPosted: Thu Jul 27, 2017 12:43 pm 
Jedi wrote:
it would need that to run right with FI


Yeah... with FI, Lamda/AFR sensor is what changes the mix on the fly. (isn't it?)

Computers. sheesh.

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 Post subject: Re: Zoomed Struggling with Yoshimura Exhaust
PostPosted: Thu Jul 27, 2017 3:57 pm 
Yes, you definitely want to hook up the O2 sensor. The bike is probably in limp mode as it's looking for a sensor reading.

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Junior Mint
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 Post subject: Re: Zoomed Struggling with Yoshimura Exhaust
PostPosted: Thu Jul 27, 2017 4:30 pm 
It wasn't showing the fault light, because I had the blanking plug fitted but having fitted the standard pipe back on I suspect thats what it is. Bit pointless selling something in the UK that isn't suited to the bikes... No I'll need to find someone to mod the pipe to take the sensor.

More money more problems.


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 Post subject: Re: Zoomed Struggling with Yoshimura Exhaust
PostPosted: Thu Jul 27, 2017 9:14 pm 
konastab01 wrote:
More money more problems.


Welcome to Ruckin! :wink:

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Junior Mint
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 Post subject: Re: Zoomed Struggling with Yoshimura Exhaust
PostPosted: Fri Jul 28, 2017 5:15 am 
theruck1 wrote:
konastab01 wrote:
More money more problems.


Welcome to Ruckin! :wink:


Agreed :highfive:

For example, until I read this post I didn't even know there was a fuel injected ruckus..... :oops:

But I could do the same mods to 3 different rucks and one may work without even the slightest of problems, but the other 2 may hit me with some new problem or issue to solve and each could be different issues. lol. That's why I call what I do Working Some Magic. :lol:

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Shot Caller
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 Post subject: Re: Zoomed Struggling with Yoshimura Exhaust
PostPosted: Fri Jul 28, 2017 7:46 am 
TeksRuck wrote:
theruck1 wrote:
konastab01 wrote:
More money more problems.


Welcome to Ruckin! :wink:


Agreed :highfive:

For example, until I read this post I didn't even know there was a fuel injected ruckus..... :oops:

But I could do the same mods to 3 different rucks and one may work without even the slightest of problems, but the other 2 may hit me with some new problem or issue to solve and each could be different issues. lol. That's why I call what I do Working Some Magic. :lol:


yeah.. the euro zoomer is FI.

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Papa Smurf says it's drafty in here and those damn kids still won't get off his lawn. :smile:

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Junior Mint
Junior Mint

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 Post subject: Re: Zoomed Struggling with Yoshimura Exhaust
PostPosted: Sat Jul 29, 2017 9:58 am 
Ive got another Zoomer that doesn't run right now as the fuel injector is fucked, so I'm gonna swap out the FI unit and get it up and running then I'll stick the Yoshi on it and see if I'm having the same issues.


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Sith Slayer
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 Post subject: Re: Zoomed Struggling with Yoshimura Exhaust
PostPosted: Sat Jul 29, 2017 11:01 am 
are you serious?

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49cc-Sith Slayer-Mechanically disadvantaged-130 rear/2 shoe clutch
66cc-Annakin
49cc-2007 Honda Metropolitan- gonna make it super cute, build thread to come

Its easier to tell the truth than to defend a lie.......for some.

75/49 Founder


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Shot Caller
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 Post subject: Re: Zoomed Struggling with Yoshimura Exhaust
PostPosted: Sat Jul 29, 2017 11:26 am 
ah, you know what, some of these kids quit school in the 5th grade. Let's them do what they want to do.

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Build thread: Backtop Thunder

Papa Smurf says it's drafty in here and those damn kids still won't get off his lawn. :smile:

Tanuki wrote:
I didn't say that, yet


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Junior Mint
Junior Mint

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 Post subject: Re: Zoomed Struggling with Yoshimura Exhaust
PostPosted: Sun Jul 30, 2017 11:58 am 
Jedi wrote:
are you serious?

Why wouldnt I be serious? If its doing it on both it means that its the lambda sensor thats missing if it isn't well its something on my main scooter...


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Sith Slayer
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 Post subject: Re: Zoomed Struggling with Yoshimura Exhaust
PostPosted: Mon Jul 31, 2017 7:14 am 
so if you have a flat tire on a bike....what would happen if you put that tire on another bike? I bet the tire would still be flat, right?
you need that sensor plugged in. I know you want it to just work because you spent money....but the mechanics of the bike don't care.

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49cc-Sith Slayer-Mechanically disadvantaged-130 rear/2 shoe clutch
66cc-Annakin
49cc-2007 Honda Metropolitan- gonna make it super cute, build thread to come

Its easier to tell the truth than to defend a lie.......for some.

75/49 Founder


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Junior Mint
Junior Mint

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Posts: 86
Gender: Dude
The way it should be
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 Post subject: Re: Zoomed Struggling with Yoshimura Exhaust
PostPosted: Wed Aug 02, 2017 7:46 am 
The reason Im saying it is because others in the UK are running this same setup and dont seem to be having the same issue.


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