I'd guess most shops wouldn't know what a one ball mod is. You'd have to ask them to remove one of the mufflers. This requires them to provide a small piece of pipe (90 degree). The first gen Cooper S had two mufflers and as far as I know are the only minis that can do this.
No regrets. It burbles more especially when cold. Pulling out of my work parking lot at the end of day some co-workers turn and look when I'm leaving but it's not bad. Do it!
Seems like the previous owner of my Mini did the same thing, but he made the piping himself. Mine is crazy loud. Cold start has like a muscle car burble and nowhere on the rev range is it quiet in any means. I think he removed more than just the right muffler.^^
The stock exhaust on these cars have two "mufflers" and all of the exhaust gases go through both mufflers. This mod simply removes the first muffler (passenger side muffler). Since all gases went through the remaining muffler before the mod, there is no additional constriction/conflict. If anything, it is a freer flowing design since it only passes through one muffler now.
They only used a 90 degree bend pipe that was the same size diameter as the exhaust piping. You can see it in the video. If you do it yourself, be careful where you cut so the pipes line up!
Majic1kid- we don't have smog tests in NY, but I don't see why it wouldn't pass. It's only taking off one of the mufflers which only suppresses sound. The catalytic converter remains untouched.
Minicooper24- I'm not sure why you think this mod adds back pressure. It's obviously not as free flowing as a well tuned after market full exhaust, but by removing a restriction like an entire muffler wouldn't create back pressure; it would only reduce it. It's cheap, adds nice noise, removes about 30 pounds and free up a bit of flow. BTW- I'm a gear head and love my mini!
Just a question what canister did you use the drive side? wouldn't be a conflict with the airflow considering it's not meant to handle all of it? Just a thought It looks nice though
I'm not after a louder mini, its my wife's after all...But i'm looking for a new exhaust because one of the back boxes has rusted through....this might save me a fortune! thanks for the video! Any ideas where i can get the replacement pipe in the uk?
Your right I didn't notice the first time I watched the video. I thought I'd seen 1 inlet 2 outlets on passenger's side canister. I over looked it, I definably will give it a try. Is it any louder with only 1 muffler?
It's a little louder, but not by much. It now has a slightly deeper tone and pops and burbles quite a bit more on off throttle. tKBurek- You like my 15 inch steelies, eh? :-) They are my winter wheels and tires. I rode them all winter and it only snowed a couple times. I have my 17" rims back on and it's nice to have some grip again!
Rudy- better flowing exhausts will add a small amount of power. This modification will add a couple horsepower but nothing really substantial. Still worth it IMO.
