I have a used top speed catless X-pipe for a e9x M3. I purchased this as the quad resonated x-pipe, but had two resonators closest to the headers cut out due to rubbing on my driveway. I had a local shop weld two straight pipes where the two resonators were. My car had zero drone with this x-pipe and sounded just as good as any other top brand x-pipe.
I will also throw in fabspeed O2 foulers. The O2 foulers worked pretty good. My car was never tuned and the CEL would come on every 5,000 miles or so and be on for a couple hundred miles then turn off again.
Looking to get $500 plus shipping and paypal fees.
