07 WR450f deceleration popping

[Andot09]

Hi, my new (second hand) Wr450f has an annoying, loud pop noise as i decelerate. It only seems to happen for the first 20-30mins of a ride even after i let it warm up for 5ish. The baffles have been removed from the exhaust. I was wondering if anyone knew how to stop this as it is extremely annoying.

Thanks

[ww44wrf450f]

https://www.thumpertalk.com/forum/showthread.php?t=743932

try this link see --- grayracer513 link? give him some gas ?

[KennyMc]

Does the Australian bike have the AIS on it?

[Andot09]

Hey thanks for the link and no the australian bikes dont have AIS. After reading from the link i still cant understand why it stopped as it got later in the day?

Thanks

[ranger85]

If it goes away later in the day, or after the bike is real good and hot, than it sounds like you are a little lean on your pilot. It's getting hotter in the day, thus richening the mixture. Try going up a size on your pilot jet and set the fuel screw to 1 1/2 to 2 turns out.

[Andot09]

Thanks for the help, ill give that richer pilot jet a go because it sounds logical. I have a feeling a richer one came with the bike anyway. Thanks