Hi Richard,
the sound of the first factory sport exhaust is really disappointing. If I remember it correctly the standard exhaust offers 71 db and the sport exhaust 74 db.
The thing is that we are not allowed to deliver a higher decibel output at idle speed. The newest flap exhausts now need to be silent/closed when engine is started.
In former times the exhaust flaps have been vacuum driven. Cause no vacuum when engine is started they did start loud - with flaps open.
Now the flaps are driven by electronic (CAN driven), they have to be always closed when engine is started.
When you drive in normal mode flaps will open @ 4200 rpm
When you drive in sport mode the flaps will open @ around 3200 or 3500 rpm
When you select Sport + mode the flaps are fully open all the time. Customers can install an illegal switch (we don`t fit it) to open flaps by hand/switch when wanted.
This is not allowed ;-)
We already bought a special microphone. We fixed it at the rear end during driving test and made some records - sounds really good I can promise so far.
We will let you know soon....
Firstly we will have to find a solution with those who don`t allow what we are doing....
Regards Frank
