[850tgul]

I thought it was the best money I spent on the car. It may not transform the performance of the car but, for me, it did transform the driving experience. The S65 has the potential to make one of the most amazing induction notes you will ever hear. The plenum unlocks that glorious noise.

Perhaps if you have a test pipe/fully decatted car, the noise may overpower the induction note but, short of that setup, you will still hear it. I had gutted secondaries and a Borla catback and the Eventuri plenum was still easily heard and enjoyed. It was amazing. The exhaust would burble and rumble down low and then the intake roar would take over up top. And downshifts....unbelievable.

I sold the M3 for a 911 a while ago but I still miss the noise the M3 made. The plenum was a big part of that enjoyment.