Exhaust System - Sport Exhaust System Retrofit: Overview
2911 (997)
5/05 ENU 2601
Apr 17, 2009
Exhaust System/Sport Exhaust System (I-no. XLF)
Information
This bulletin replaces bulletin Group 2, # 5/05, dated April 11, 2007.
Concern:
Retrofitting
Model Year:
As of 2005 Up to 2008
Engine Types:
M96/05 = 3.6 ltr. and M97/01 = 3.8 ltr.
Restriction:
Not approved for vehicles with power kit (I-no. X51).
Information:
In the new sport exhaust system, the signal for activating the flaps in the rear mufflers does not come from the vehicle speedometer as before, but from the respective current map in the DME control unit. This depends on the driving status and the accelerator pedal position among other things.
Sport exhaust system control:
^ Vehicles with Sport Chrono package (I-nos. 639/640): --> Switch console with "Sport" button (see Owner's Manual for the vehicle)
^ Vehicles without Sport Chrono package: --> New switch console with additional "Double tailpipe" button
The regulating time after pressing the button, determined by the response time of the pneumatics, is approx. 1 - 2 seconds.
Engine power and exhaust behavior of the vehicle are not affected. The sport exhaust system is also available ex-works for new vehicles under Exclusive option No. "XLF"!
In the "Double tailpipe" button, the display (diode lights up) for the activated (clearly perceptible exhaust motor noise) or deactivated sport exhaust system has been changed as follows as of model year '06.
Model year '05:
Diode lights up in "Sport" button: sports exhaust system is active.
Diode lights up in the "Double tailpipe" button: sports exhaust system is not active.
The diode also flashes in the "Double tailpipe" button to indicate the regulating status of the flaps in the rear mufflers.
As of model year '06:
Diode lights up in the "Sport" (I-nos. 639/640) and "Double tailpipe" buttons: sport exhaust system is active.
Parts Info:
Parts List:
Information:
Identifying features when installed
The rear mufflers are marked on the outside as follows:
Left rear muffler (for cylinder bank 4-6): Porsche logo:
code 997/20 and Part No.: 997.111.612.02 (--> Figure 3
-bottom in set-);
Right rear muffler (for cylinder bank 1-3): Porsche logo; code 997/19 and Part No.: 997.111.611.02.
Both identification codes can be read using a mirror, for example.
Left tailpipe: Porsche logo and Part No.:
997.111.982.20 (~ Figure 3-top inset-);
Right tailpipe: Porsche logo and Part No.:
997.111.981.20.
Please also provide your sales department with this information and give the customer a copy of the first three pages of this Technical Information.
Tools:
Working Times:
Disclaimer