[Fraggy]

I noticed that my Corsa exhaust only drones when its warmed up. Typically, I dont really get any real drone until the oil temp reaches 230 or above. Any ideas why? Is this typical? I dont remember my so called "Eisenmann Sport" doing that or my real Eisenmann Race on my 325.

Also, there is a small hole at the bottom of each muffler, my shop thinks its to drain the water that builds up inside. Could this be contributing at all? Do all mufflers have this hole? I dont remember others having it, but I didnt really look either.

Any help is appreciated, thanks

[Amir87]

My "Eisenmann Race" drones more once its warmed up. I had slight drone when I had the golf tee mod only when it was warmed up. One more thing, when I took off the stock muffler about 2-3 cups of water came out of it and I did not see any holes where you could drain it.

Maybe others can chime in.

[cn555ic]

Originally Posted by Amir87

My "Eisenmann Race" drones more once its warmed up. I had slight drone when I had the golf tee mod only when it was warmed up. One more thing, when I took off the stock muffler about 2-3 cups of water came out of it and I did not see any holes where you could drain it.

Maybe others can chime in.

Same here my Oem exhaust had about 2 to 3 cups of water in it too..I was very surprised that there wasn't any drainage for the water...My exhaust has a slight hole in the pipes and I seen water coming out of it which doesn't bother me now because this water can drain.