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madbriuk

back fire wr450 08

14 posts in this topic

hi lads just fitted a new leovince silencer its sound good but a bit loud and now there flames comeing out when i back off the throtal/speed,how can i sort this and is there a way to make it a bit quieta for MOT when i need to. UK.

thanks peeps

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hi lads just fitted a new leovince silencer its sound good but a bit loud and now there flames comeing out when i back off the throtal/speed,how can i sort this and is there a way to make it a bit quieta for MOT when i need to. UK.

thanks peeps

Is it a true back fire, or just 'popping'?

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No, it's not too rich, it's too lean!

You need to remove your AIS system and block it off (if it has one), change your pilot jet, and adjust your fuel screw.

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do i turn it in or out and where can i get the AIS system kit from in the uk.

thanks mate

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do i turn it in or out and where can i get the AIS system kit from in the uk.

thanks mate

First, do yourself a favor and read the stickies at the top of the forum

Next, re-jet and un-cork, and add an adjustable fuel screw

Then do a AIS block off, if you have one.

Google Search is your friend for parts in the UK.

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No, it's not too rich, it's too lean!

You need to remove your AIS system and block it off (if it has one), change your pilot jet, and adjust your fuel screw.

+1 Too lean of a pilot jet.

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hi again lads i was told to unscrew my mixture screw a bit at a time to get rid of the poping when i let off the revs well i did and its poping more now and it don't feel as powerful, am i doing somthing wrong or have i got to keep unscrewing till the poping gosaway.

thanks

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I would suggest going to a 168 main jet and 48 pilot jet. Put in an adjustable fuel screw and turn it out 1 3/4 turns to start.

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