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Message started by northshore_paul on 06/08/08 at 21:11:25

Title: Dyna Muffler Mod
Post by northshore_paul on 06/08/08 at 21:11:25

I have a Dyna muffler coming and was wondering if this will require a carb jet change from stock. If yes what would be the results of installing it before doing any carb changes? Oh yes, I have a stock 2006.

Title: Re: Dyna Muffler Mod
Post by barry68v10 on 06/09/08 at 03:15:03

I'm going thru something similar on my 1998. Any time you make a change to the intake or exhaust flow, you should do a full retune on the carb.

Check out the tech section.

Consequences for not doing it? Anything from nothing immediately noticeable to....burned valves/rings/seals, cracked piston, cracked head, injested exhaust valve, etc.

Title: Re: Dyna Muffler Mod
Post by T Mack 1 on 06/09/08 at 07:22:50

If you haven't modified the carb yet, buy the Jet kit Lancer sells in the Market place. He has the best prices.

If the Dyna muffler is a "stock" take off, then you will need at least a 150 Main, maybe the 152.5. With the 150, you will need to adjust the needle spacer (white spacer). With the 152.5, you would need to run it for a bit and check the plug to see if having the bigger main will give you enough mid-range on the needle to keep the white spacer. It's right at the edge, so climate & altitude will play a factor in your needs. You might need to have just a little off. I suggest use washers so you can "go -back", and make sure the washers fit in the little hole in the inside of the slide. The first set I used didn't and I was be-fuddled why I was so rich.....

If it's a Screaming Eagle Dyna, then you'll probably need the 152.5 main, and the 55 pilot jet, and will need to play with the white spacer.

Title: Re: Dyna Muffler Mod
Post by bhcarl on 06/10/08 at 12:38:00

has anyone put on a dyna muffler without the carb jet changes and not had any bad effects?

Title: Re: Dyna Muffler Mod
Post by Prophet_10 on 06/10/08 at 13:22:03

6E646F6D7E600C0 wrote:

has anyone put on a dyna muffler without the carb jet changes and not had any bad effects?

yes