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Mark Hendrikx - Automotive engineer at Mosselman

Expert's advice:

For the ultimate in weight reduction, tuning potential, and racing sound, Akrapovič offers stainless steel cat-less downpipes to make the BMW M3/M4 an even more powerful machine. This setup is intended for dedicated track-day cars and enthusiasts, and it will also add to the overall experience of what’s already a stunning performance car for any discerning driver. Delivering great sound, without creating unwanted cabin noise, these beautifully-crafted downpipes offer an upgrade to Akrapovič’s Evolution exhaust system.

When installing Akrapovič aftermarket optional downpipes, which are developed for use on closed tracks only, remapping the ECU is mandatory, in order to prevent potential »check engine light« warning signals.

Mark Hendrikx - Automotive engineer at Mosselman

MOSSELMAN tuning experiences

  • Anders M.

    With Mosselmans' performance package I exceeded even more than the company advertised on their website! The information sharing process was easy and hassle-free. Excellent customer service from Leon and his team!

    Anders M.

  • Thom H.

    Mosselman tuned my BMW 318d today. What a result, it became a completely different car! Very professional company and friendly staff. This was my second car here and again they have exceeded my expectations. Thanks!

    Thom H.

  • Rob M.

    Very happy with my improved car, the car reacts better on the throttle and is very direct. Also, the exhaust sounds better!

    Rob M.

  • Bas H.

    Visited Mosselman on May 24th for the chip tuning of my 135i, great result! The adjustment is great, when will you post the photo on FB :)?

    Bas H.

  • Romke B.

    After 1,5 years still very happy with my iTronic. By far the best upgrade I could have done with my BMW 340i.

    Romke B.

Technical details

  Unit Stock Akrapovic Max Gain
Maximum power kW
HP (m)
HP (i)
343.0 / 6650 rpm
466.3 / 6650 rpm
459.9 / 6650 rpm
355.9 / 6550 rpm
483.9 / 6550 rpm
477.3 / 6550 rpm
+ 17.2 / 5800 rpm
+ 23.4 / 5800 rpm
+ 23.1 / 5800 rpm 
Maximum torque Nm
584.9 / 4200 rpm
431.4 / 4200 rpm
602.6 / 4950 rpm
444.5 / 4950 rpm
+ 28.7 / 4950 rpm
+ 21.2 / 4950 rpm
Weight kg
- 3.2
- 7.1
- 45.1
Noise dB 94 / 3750 rpm 100.5 / 3750 rpm 6.5
Installation time min   60