I've been running True Duals for years and decided to try a 2 into 1 system, I originally was going to go with the Bassani Road Rage but when I called to order it Dr. V-Twin talked me into the D & D. I want to first THANK the Dr. who treated me great and gave excellent service, next I will tell you about my bike, it is a 2001 FLHTCI TC88 which has had motor work done by Carl's Speed Shop, it has cam's, the throttle body is bored, push rod's, it's bored to 95 ci with 10:4 pistons, it's ported and polished , has the Power Commander III etc., I was running Bub 1 3/4" true duals with Bassani FLH517 slip on mufflers, it was turning 103hp and 102 trq, I put on the D & D Fatcat 2 into 1 with the ghost pipe and had Cycle Rama in Pinellas Park dyno tune it to the new pipes, results are I gained 10hp and 3 trq. , with this said the torque hits at entirely different rpm's, at 2000 rpm td's 84 trq/ d&d 77trq, 2500 rpm td's 79 trq/ d&d 97 trq , 2700 rpm td's 84 trq/ d&d 105 (the d&d level off here until 6300 rpm), 3000 rpm td's 84trq , 3400 rpm td's 89 trq, 4000 rpm td's 99 trq , 4400 rpm td's 102(the td's then level off til 6300 rpm) The weird thing is looking at where the power hits you think you would feel a huge difference but I guess because I'm an aggressive rider on the throttle a lot by the seat of my pants I really do not feel much of a difference other than the power with the D & D is smoother, Final Thoughts : looks - although I've always liked the looks of a true dual system the D & D have a nice look and am equally happy with either, Power: the D & D produce more power and if I was going from stock I would definitely look into a 2 into 1 over a true dual however because I already had a system I do not feel the $1000 I spent was worth the gain so if you already have a system you like think hard, Sound: D & D is much more quiet than my true dual, had I known it was this quiet I probably would have tried the Thunder Header, the tone sounds good though but to quiet for me, final thoughts D & D instructions or lack of suck so if you are a good wrench you will be fine anyway if not I'd get them installed

 

Your D&D will get louder over time, trust me. I agree the lack of instructions sucked. Should be simple, but they throw in some spacers and expect you to guess where to put them, etc.

 

+1 Same here

 

Got to agree with Dawg, with miles comes increase in volume. Got standard baffle on mine and its plenty loud according to area PD.

 

Get the D&D performance baffle. I guarantee the TDs won't even be in the same league of loudness, if that's what you're looking for.

 

hopefully it will get louder, also we go to North Carolina regularly , I believe that is where I will see the benefit of the torque coming on sooner when I'm in the twisties at lower rpm's , in Florida being flat and straight my rpm's are normally up anyway, I like the pipes and again if you have stock and are buying for the first time I would definately look into a 2 into 1 system but if you have $1000 already in a true dual system I don't know the gain is worth spending another $1000 + $300 to get it tuned but time will tell

 

my D&D with the standard baffle was the loudest thing that I've ever heard.....sounded crazy loud.

 

My D&D came with the quiet baffle which i think is way too quiet. I removed the baffle and took off the fiberglass wrapping and now it sounds pretty good.