Capristo Bmw M4 G Series carbon exhaust

The introduction of the DPF made the voice of the 6-cylinder M difficult to recognise. The sound is unsatisfactory for true BMW M lovers.

To do justice to this impressive engine from all points of view we have created a hand-polished 309 stainless steel exhaust system consisting of a pair of catalysts 200 cells eliminates FAP, non-silenced central and rear silencer equipped with valves controlled by the BMW management system.

The final part is made up of 2 pairs of anodized aluminum terminals covered in carbon fibre.

Thanks to a design based on reverse engineering we are able to create a line optimized in terms of dimensions and exhaust flows. We start from a laser scan of the car's original exhaust line and then create the CAD model. From this model we obtain the dimensions and dimensions useful to us. We then go on to create our CAD project and the first prototypes.

Thanks to this process we manage not to vary the original backpressure values while improving the acoustic output and performance. The valves are managed by the BMW standard system.

PHONOMETER AND PERFORMANCE RESULTS

Sound increase:

Capristo (valves open): 126.7 dbA

Power increase:

Standard exhaust: 519.7 HP at 6024 rpm

Capristo: 532.3 HP at 6470 rpm

Torque increase:

Capristo: 708.6 Nm at 4062 rpm

With valves closed the sound is the same as the standard car in terms of volume and sound.