[Dackelone]

So... I decided that the N55 mids just were not cutting it for me. I wanted a louder exhaust with more bass. While the N55 mids do make the exhaust louder... its more in the mid(freq) sound range than in the Bass tone. And only really at WOT(wide open throttle). I always was in love the first time I heard a PE in person.

I was afraid IF I installed the PE with the N55 mids... the exhaust would be way too loud. Plus I did not want to cut up my N55 mids... bc I thought I could sell them for a reasonable price and recoup some money. I also had listened to a lot of N54's with the PE(& y-pipe res delete) and I just LOVE that sound. I also love all the popes and crackles with the resonator delete of the PE.

I did run into one little problem when I went to remove the copper nuts on the DP studs. They snapped CLEAN off! I did not even use a lot of torque! Then I came to find out that BMW does not sell those threaded studs separately! You can forget that at $2K per DP! lol

So... I needed an ace dilyn torch to get those studs hot enough to use a 8mm punch and a sledge hammer. One note... maybe remove the engine lower cover... bc that red hot stud will shoot put when you hit it and it might melt your under tray!!

Well... here are my pics...


use the PE y-pipe as a template before using a hack saw to cut your mid pipe.




two new clamps, and a rear exhaust muffler ring gasket come with the PE. You will need new DP/mid pipe gaskets though...








Tq the PE exhaust clamps to 45Nm...




TUV/EU conformity plate on y-pipe and rear exhaust muffler...




when I went to loosen the N55 mid pipe... one of the M8 studs sheared off. I used plenty of Liquid Wrench and still it just snapped off!! Lucky for me my dealer was able to replace all four studs with stainless steel M8 bolts and copper nuts.






sheared off copper nut with whats left of the M8 stud...


seven month old N55 mids with OE rear muffler...


new stainless steel M8 bolts M8 x 35mm with new copper exhaust nuts