I have V&H twin slash and in an effort to "take the edge off", I made lollipops out of washers and some that I welded the hole shut. Using a decibel meter I down loaded to my phone the results were 1no lollipops 93db avg,2 lollipop with hole 92db avg,3 solid lollipop 90db avg. All were checked at idle. 14 SGS stage 1 no cat. I'm planning to order the TTI inserts to compare out of curiosity. The lollipops were installed straight down, didn't experiment with angles. Your results may vary!

 

Hmmm. Since the sound level doubles every 3 db, that's a pretty good difference.

 

Kevin, I've been thinking about TTI's for a while now. I have a 02 Fatboy with V&H long shots. Which TTI's would I use? Btw, the pipes have about 2" I.D.

Thanks!

 

Here is a link to a report from a guy that did what you are thinking about. He had his own lollipops he made, then he swapped them out for some TTI's.

https://www.hdforums.com/forum/sport...lollipops.html




If you are running baffles, then get the W118's, if you are running no baffles, then get the W158's.

Video below is not the same bike, but it is the same principle-

 

Will the TTI W158 bolt fit thru the existing hole used for securing the baffle?

 

Increase back pressure and reduce sound....i wish there was some other way

 

Normally yes, but V&H uses a smaller diameter baffle retaining bolt than everyone else. So you will need to drill it out just a little larger...or drill a new hole.

And that is the beauty of the patented design of the TTI's. With the "W" version there is a negligible increase in back pressure, while there is a huge reduction in reversion, along with a deepening of the tone (which sounds quieter to the human ears).

Contrary to the very popular myth, back pressure is not need on a HD engine to create torque...an absence of reversion is what gives that low & mid range torque, everything else being equal.

The myth is kept alive because most systems use baffles (which create back pressure) to reduce reversion.

BUT, to get a serious reduction in sound levels, while not increasing back pressure, the best solution is to use a large, cheese grater style, baffle, with some some packing around the outside of the baffle, then use a TTI at the end of the baffle.

The packing will absorb a lot of the sound, the large baffle will not create much power robbing back pressure, and the TTI will reduce/eliminate the torque robbing reversion.

 

I don't know much about baffles . But I know if you can drop a golf ball through it like you can with a V&H . It's just a round cheese grater called a baffle.

 

For some reason I tried the DK lollipop things awhile back. I noticed zero improvement in performance and my Rush with 2" baffles now sounded like I had a washer shoved up my mufflers. Horrible!
If you want to reduce noise just get new,smaller baffles from Rush.

 

You're in for it now