I installed Rush slip-ons with 1.75 baffles (in both pipes) on my '07 Ultra with no other mods other than a remap when bike was newer for a light ping. Bike runs great as is with no popping or pinging and I am planning on a stage 1 soon but I want to make sure I get the sound I want first. One pipe developed a squeek and the other a rattle. I pulled both baffles and found the packing partially gone on one side and what ever they use to wrap it was gone on the other side. I rewrapped both baffles with the old matting and the pipes sound quite a bit louder due to some of the packing not going all the way around the baffle. My question is (finally!): I want to replace both baffles with a 2.00 on the left and a 1.75 on the right and wondering how much louder it would be and if it would still have enough back pressure to run for awhile without a stage 1 or would it be too lean? Any help is appreciated!