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 Airbox door remove (no fuel programmer/power commander)

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NicWR




PostSubject: Airbox door remove (no fuel programmer/power commander)   Fri Oct 05, 2018 6:09 pm

Hey WR riders!  cheers

I wanted to remove my airbox door on my WR250X to get that gnarly sound droooool

But now I have a question.

If I ride with an open airbox, does it affect the petrol mixture/does the engine get too much air and not enough petrol?
To my knowledge the injection and control unit of the bike should regulate the mixture itself shouldn't it?

I really like the sound with open airbox but I dont want to kill my engine just for the sound Very happy

Hope my writing is understandable (Im from switzerland Very happy)

Greetings
NicWR
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YZEtc

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PostSubject: Re: Airbox door remove (no fuel programmer/power commander)   Sat Oct 06, 2018 3:09 am

Most people will tell you that you need a fuel programmer in order to do this properly for the very same reason you wrote.

I say two things:
1) Don't kid yourself and do it the right way.
2) I feel the increased intake noise is a negative.
Some noise is fine, too much is no good.
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Jens Eskildsen




PostSubject: Re: Airbox door remove (no fuel programmer/power commander)   Sun Oct 07, 2018 6:37 am

The top of my airbox is modded some for more air, and I have an aftermarked header and pipe.
No programmer, its been fine for 20.000km.

However, removing the door adds a lot of air, i'd recon you'd need a programmer for this.
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Hertz

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PostSubject: Re: Airbox door remove (no fuel programmer/power commander)   Sun Oct 07, 2018 9:54 am

NicWR wrote:

To my knowledge the injection and control unit of the bike should regulate the mixture itself shouldn't it?

It does regulate but not to that extent. If that were the case what would be the purpose of a programmer?

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