WHOA CHECK THIS OUT , BEENS BEENS BEENS

[X5MEnthusiast]

Hey Neil,
Love your M and 215's! I would imagine you've researched exhaust options. Looks to me like the Meisterschaft GTC or Eisenmann would be good options. The GTC has a switch for two different sound levels. I'd like to have the option of being quiet in my neighborhood. Have you done anything yet with exhaust?
Thanks Sean

[998M]

Originally Posted by X5MEnthusiast

Hey Neil,
Love your M and 215's! I would imagine you've researched exhaust options. Looks to me like the Meisterschaft GTC or Eisenmann would be good options. The GTC has a switch for two different sound levels. I'd like to have the option of being quiet in my neighborhood. Have you done anything yet with exhaust?
Thanks Sean

I believe Eisenmann also has a sport exhaust with the valve like the stock exhaust.

M

[998M]

Here are both dynos from Active (top graph and chart) and ESS (bottom graph). I know it is hard to compare data from different dynos. Is there someone out there who can help interpret this data. To me (someone with almost zero knowledge of dynos) it appears that there is not much of an overall horsepower gain at the top end. But looks the all of Active's gains come around 4000 RPM. Thoughts?