I asked myself the same question about a 2-into-1 a few weeks ago and searched here on HDF. Seemed to me the SuperMeg was an excellent choice for sensible noise output, tunability and cost, so that is what I bought. I'm into winter tinkering and upgrades at present, so yet to ride it.

 

+1 for SuperTrap Supermegs...Performance is my #1 concern, tunability my 2nd, and being able to go loud or quiet using open vs. closed end caps...priceless!

 

I went SuperMeg as well.

Seemed like I was half-measuring by 120R and not doing the exhaust. Stock header, SE Slip-ons?

--Puh-lease... [ha ha]

 

I have run the Borzilla, and yes it is loud, but I ran it on a very stout 120" HQ engine. It is pure overkill for anything less than 113" and even at that, is still marginal as the primaries are much larger. I really don't recommend the Borzilla for anything less than 120" unless it is an absolute beast. If you run it on a 107 or smaller you are giving up a lot of bottom end power. Maybe you meant to say the D&D Boss for the 2009 and up bikes?

Your suggestions for tuners is all over the map, being that you are recommend speed density and Alpha N tuning systems. The TTS is similar to the SEST and tunes using the original ECM and narrow band sensors and a dongle, PC-V being quite different, but still using the ECM but with an add on module and wide band sensors and then the Thundermax which completely replaces the ECM and uses wide band sensors. All work very differently and produce very different results. The TTS is not an "autotune" system, but does have a function called V-tuning which will get you close. In all cases, you must have an understanding of how ignition timing impacts the engine and have somewhat of an understanding of the system. I have seen way too many purchase a system, hang it on the bike and complain it does not work.

 

I've experienced a Bassani Road Rage (great raspy sound but loud) and the Supertrapp Supermeg (as loud or quiet as you want). Both pipes performed great, really smoothed the low end out. I made my own baffle for the Bassani which really helped but then I sold that bike. On my 2002 Road Glide I have the Supertrapp and love it. I can still hear after a day in the saddle!

 

Can't go wrong with the supermegs 2:1, very tunable for performance and sound...

 

I have the D&D and am happy with it.

 

+2 for the dragos 2into1. Frank and his product are top notch.