Eisenmann Exhaust Section 1 (Secondary Cat Delete) and Section 2 (Resonator Delete)
 

PLEASE NOTE:  Hardware consisted of Supersprint Headers and Eisenmann Rear.  Blue run w/BMW OEM 2007 Software vs. Active Autowerke E60 M5 Stage 2 Software, 23 WHP / 16 RWTQ Gain
 

Update 1:  The rear exhaust section was not enough for Avery and a few weeks after it was installed, Eisenmann Sections 1 & 2 were enroute as well as plans for ECU upgrade by Active Autowerke in Miami.  Once all the new goodies were installed, it was time to hit the rollers where we achieved a max power level of 443 RWHP and 329 lbs. feet of torque at the wheels, a nice bump in power on top of the existing modifications.  The sound level was increased dramatically and for those of you that like the sound of an off-shore power boat, this is the system for you.  For those wanting to keep the decibel level down, the "Sport" rear section can be used.

Update 2:  Supersprint Headers were recently installed leaving this M5 with completely straight pipes.  The sound of the V10 with this exhaust configuration was a bit much for Avery, the DB level was a bit high for everyday driving so the secondary cats and resonator were re-installed bringing a much better sound to the car.  This setup is actually lower on the DB scale vs. OEM Headers and straight pipes to the rear Eisenmann Mufflers.  Once we had an exact direction of where we were going with the exhaust, the factory mid pipes were bunged for O2 sensors and the ECU was off to AA for the Stage 2 Flash to round out this phase of the build.

Now that this car has plenty of "GO", it needs alittle "SHOW" and that is coming by way of some custom Carbon Fiber and Paint Work in the near future...Stay Tuned !!!

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