As the improvement of the sound world of modern cars is challenging in terms of legislation, when you add the preservation of the factory warranty to the equation, there are not too many options.
Several things must be taken into account. Due to legislation and the factory warranty, the catalysts and particulate filter must be kept in operation. In practice, the easiest way ed. taking into account the mentioned aspects, you have to think about the part after the catalysts and the particle filter. This part consists partly of the midpipe and the rear silencer. The fact that just any kind of pipeline is not a problem, the solution must be ECE-approved so that it can be used in road traffic.
Clear tunes, then. Eyes naturally turned to the German HG Motorsport's Bull-X product line. The products of the Bull-X product series are all made to order in Germany from the start. HG Motorsport has put a lot of effort into the development of the product in terms of material, sound and fit. When ECE approval is added to the equation, I get a fair value for the price, and there are hardly any competing solutions available, even in a price category that is twice as expensive. The choice was therefore clear, the Bull-X ECE-approved model.
As the icing on the cake, the ASR controller for exhaust valve motors. Why? In order to obtain the so-called to get all the joy out of the change, you have to be able to control the flaps of the exhaust pipe so that they can be fully opened. Without an ASR controller, the exhaust flaps are only partially open in the best case, and the maximum sound is not achieved. However, this is not the whole truth.
One headache for G8X Motorsport BMW owners until now has been that the exhaust flaps can be turned to the "open" position only when "Sport" or "Track" drive mode is switched on from the cabin. That is, if you want to open the flaps without the ASR steering wheel, at the same time the throttle response becomes more aggressive, the chassis becomes stiffer, the stiffness of the steering wheel and Feeback changes. So it is not possible to drive the car in "comfort" or "effiency" mode, with the exhaust flaps open. Based on the feedback, almost every G8X Motorsport owner wants to drive the car even with milder settings, still enjoying the maximum sound.
In the G81 M3 model, the ASR controller is recommended to be installed in a container. The container already has grommets, from which the wires can be neatly pulled into the container. Remember to properly seal the penetration.
You can find Bull-X & EGO-X pipelines and accessories in our online store, directly from the importer. If necessary, also installed. We are happy to help you choose the right pipeline.