Can the '07 SE slip-on be modified to increase the sound dbs?

 

Yes. You can take the fiberglass wrapping off of the baffles. This will make them sound a little better. You could also try (although I haven't done it) putting more holes in the baffles, or opening up the part of the baffle that diverts the flow of the exhaust. I think I read where someone just cut a hole or slot in that part, but I'm not sure if they were pleased with the results. I ended up gettingthe Big City Thunder baffles that mount at the end of the head pipe, just in front of the slip-ons. Then I made the slip-on's baffles a straight through pipe by cutting out the part with the holes and the bend, and welding in a straight pipe. I love the sound now. It's not too loud at idle or just cruising but when you roll on the throttle, it definitely gets attention.
-Z

 

Thanks for the info! Is there a concern of remaping if you remove the fiberglass packing?

 

What is involve in removing the fiberglass packing?

 

Removing the end caps, then drilling out the rivets that holds the baffles in.

 

Check out this thread.
https://www.hdforums.com/m_1067023/m...tm.htm#1117959
I gave details on how I did mine. FWI - I have since put in Big City Thunder baffles. The ones that are for "alternate installations." They mount inside the end of the header pipe, just in front of the muffler. I also re-made the Screamin' Eagle baffles so that they are basically a striaght pipe. It sounds MUCH MUCH better. Plenty of volume when you roll on the throttle. I didn't remap or add fuel management until I put on the Big Sucker kit. With the stock air breather, I didn'tnotice any overly lean conditions. Now that I have the high flow air filter, I'm using a Techlusion 1440ST for fuel management.

 

When drilling out the rivets, did you drill into the baffle? It seems like when I try drilling the rivet I drill into something really hard, maybe the baffle, I don't know. Does anyone?
This is on a 07 Street Glide with the SE slip-ons.

Thanks,
Pete

 

I didn't have to drill out any rivets on mine. The torx screws that hold the baffles in are the tamper-proof type. You can get a bit for them at Sears.
-Z