I like the look of the stock mufflers on my '07 Street Glide. I would like to open them up a bit and continue using them and wonder if anyone has tried this? In the early 90's there was a cap inside the muffler that you could either knock out or drill a hole in to make the pipes flow better and sound louder.

 

Very hard to modify a cat muffler, there are some on ebay that modify previous years mufflers and sell them. I bought some for my RK and love them, stock look, better performance, and a decent sound, and the mufflers that I got looked brand new...not one flaw.

 

You can't drill the new pipes like in the past . Thereare different baffles in them , not just the middle we used to punch through . I just bought a set of slip ons , I like the Vance and Hines , but there are many options.

 

Do a search on ebay for b&e mufflers.(bobvic) He has good prices and many people on here love them. I plan on getting a set someday down the road.

 

Like this..
http://cgi.ebay.com/ebaymotors/rehab...QQcmdZViewItem

Later

 

fullsac.com

They will recore your stockers, I am considering this on my 07 FLHRS.

Your 07 mufflers do not have cats, you have O2 sensors.

 

I have tried to punch out the stock mufflers for a couple of different bikes now. Never was happy with the results and ended up buying different mufflers both times. Vance and Hines the first bike and Rineharts on my current bike.

 

I have an 06 ultra with the SE Muffs and I punched another whole in them about the same size as the other two and they sound SWEET. I am awaiting the arirval of the FULLSAC dual header pipe and that should balance the sound out nicely...

 

ive owned about 10 harleys and always punched out the plugs in the baffles....the baffle on my 07 is different than any other twin cam muffler i have seen....it has a baffle like my streetrod had....its squished half flat just like the one in my streetrod, that i did surgery on...actually the streetrod muffler is very quiet, but makes good power.....i think that it would not be a good idea to put a fulsac pipe on these mufflers, as they are necked down fifty percent inside and without the cross over to let the cylinders share the exhaust, you would hurt performance...thats my opinion...

 

I'm having him update mine (that I have to buy yet, I like the fltr mufflers)