2010 FLTRX: Anyone have D&D 2-1 Fat Cat system

molitord said:

The pipes look great! How do they sound? I went for the 2:1 Fat Cat as well. It shipped today and I am anxiously waiting. I went with the slant cut instead of the back cut because I am planning on extended bags at some point.

Click to expand...

I've only ridden it about 20 miles since putting on the pipes due to rain so the verdict is still out on how I like them.
But, at idle and cruise they have a nice deep rumble. No problem hearing the radio at cruise. Barely flick the throttle and they become LOUD and I have the concentric quiet baffle. I'm glad I got the quiet baffle. First time I rode with them I had no tuner. Bike seemed to run just fine. Next time I rode I put on my fuelpak just to see if there is any difference. I couldn't really see a difference in power but I'm sure the Fuelpak has richened the AFR up a bit and will probably run cooler. The fuelpak uses FP-3231 numbers for the D&D's and Ness big sucker. I talked to D&D over the phone. They told me they had about 4 weeks on the dyno testing the '09's with and without a tuner and could never get more performance by using a tuner. They said they had 40 hours on the dyno with the 2010's and had the same results. So I see no reason in using a tuner with this exhaust unless you already have one which is my case. A tuner would only change your AFR. They also said if you make any engine mods, cam, heads, etc. you would definately have to use a tuner. I bought the exhaust for the 'stock engine only'. The hardest thing about the install is putting in the new exhaust gaskets. A very tight fit. Exhaust utilizes the o2 sensors. They come complete with gaskets and all mounting hardware. Very good quality.