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Additional 35hp on a stock vehicle
the increase in performance
In order to reduce the restriction from a sealed intake we have increased the volume of the airbox by relocating the ECU and also allowing an opening in the airbox on the cold side which is away from the direct heat of the manifold
2 x Carbon Venturi stacks with integrated tubes
The car tested was without charcoal filters in the stock airboxes
Milltek OPF/GPF Bypass Resonated For OEM System - BMW G80 | G81 M3 | G82 M4 SLK-AMG (R171) Additional 35hp on a stockOPF GPF Bypass Resonated Fits to OE Downpipes & OEM OPF GPF Back System Only Requires OPF Bypass Module or ECU Tune Our range of Cat Back systems are perfectly suited to cater for anyone looking to improve their sound and aesthetics, designed as a direct replacement for the original system, available in multiple configurations enabling the owner to choose the increase in volume of their exhaust and or add a more suitably aggressive tone. All our
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