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General Category >> Rubber Side Down! >> Dyna Muffler Question
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Message started by Jpope85 on 06/23/15 at 07:01:21

Title: Dyna Muffler Question
Post by Jpope85 on 06/23/15 at 07:01:21

Hey All! Just put a 06 stock dyna muffler on my girls 98 sav to get a much better sound. Everything appeared fine after, was getting some really loud popping when letting off the throttle. I back the air mix screw off about 3/4 turn and this seems to have it running fine. I'm pretty new to carb/fuel adjustments and just want to run this by someone to make sure there shouldn't be a problem, or what i should check. thanks!

Title: Re: Dyna Muffler Question
Post by Dave on 06/23/15 at 07:06:34

Setting the idle mixture screw should be done with the engine warmed up and running....it is not just a crank it open a bit more type of adjustment. You need to adjust it so the engine gets the proper amount of fuel while running.

Here is a video that will show you what to do.

https://www.youtube.com/watch?v=zm5mB3R8Ucw

[media]http://www.youtube.com/watch?v=zm5mB3R8Ucw[/media]

If you end up with the idle fuel screw going out more then 3 turns....stop as it will not flow any more fuel beyond that point. It is time to install a larger pilot jet if you need more than 2.5 turns.

If you can turn the screw in less than a full turn...or all the way in and the bike is still running...you need a smaller pilot jet.

Title: Re: Dyna Muffler Question
Post by Serowbot on 06/23/15 at 07:13:38

Check for exhaust leaks... the tiniest air leak will make you pop like crazy...

Title: Re: Dyna Muffler Question
Post by justin_o_guy2 on 06/23/15 at 07:58:58

I put a screwdriver in my pocket, shirt pocket, little driver. Went for a ride in town and tweaked at red. lights