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First of all i would like to say thanks to a few members who helped adding their 2 cents were possible, you know who you are.
Long story short I impulse bought my car over an RS3 for a great price and didnt check the options on the car. After some time realised i need more sound and power from it. Added a racechip (hate on it if you want) which added performance gains. Started looking into exhausts and found that nothing really matches the sound of the PE in the aftermarket options.
By no means am I a mechanic or tuner this is just what I learnt about how PE cars operate the exhaust.
Mercedes will not retrofit this and you will see why
When car is off valves are open
When car is started valves automatically close after 3 seconds or so
When in comfort with exhaust button on valve open 30% or so
When in sports + with exhaust button on valves open 100+ after 4000 RPM and full load and are variable at other RPMS
There is a controller in the boot that controls these valves
All the characteristics of the PE exhaust are driven by the exhaust and valve controller
I contacted some tuners here in sydney and they said "we cant see a difference in the base map between car with and without PE"
Luckily for me there was this wrecked c43 amg with the PE as option.
After alot of discussions with other members and google research the theory was that most of the aspects of the PE exhaust i.e cracks on gear changes and burbles, pops and bangs were from ECU and a little from the exhaust. No hard evidence just theory.
The first idea was to get everything from this wrecked car.
Wiring + connectors
Special valve box thingy?
I soon came to realise the loom is "stitched"? into the main loom.
So i bit the bullet and bought the exhaust, I was ok if the car just sounded a little deeper but really was chasing the characteristics of a PE optioned car POP bang crack whatever you call it.
.
Difference in exhaust from cat back to muffler left side AMG right side standard sports exhaust. MAKE SURE YOU GET BRACKETS FROM PE OPTIONED CAR OR WILL BE FABBING SOME UP.
In summary, this has transformed the car. There is no drone on the motorway with the valves always open. Met with a friend earlier tonight and we drove both cars (his car has PE from factory). We could not notice any difference in exhaust note or power between the two cars (all done by butt dyno no dragy or cool tools available).
Ive had quite a few messages on the facebook page and just hope this helps whoever the next guy is thats trying to figure all this out.
Thanks
Dave
I got the sport exhaust and I’m gonna be picking up the exhaust soon, would I need the valve button too,and where would the control u it thing be and where would I plug it in
04-15-2023, 07:10 AM
