oK, i just spent hundreds on Dual DTMS, but why is my A4 so quiet!!!! is there something else ...
#2
here is why
just replacing the muffler will not do any thing to the noise. removeing and replacing the rear muffler still won't make any noise. I know i did it when installing my Oettinger exhaust. the most restrictive component is the pre-muffler. if you remove that you will get 100% more noise. i would recomend to replace the center muffler with either another universal muffler (assuming your current set up is universal) of a glass pack. real kits like Borla, B&B, Scorppion, MTM, ABT, who else did i leave out??? they have both the pre and after muffler. this increased sound as well as performance.
Juan M.
Juan M.