BMW F Series 20d

The BMW F Series 20d comes with two different engines, the pre 2015 models generally have the N47 engine coming in two different power levels, the 163 BHP efficient dynamics and the 184 BHP version.  Both these engines are either attached to the 6 speed manual or 8 speed ZF8 automatic transmission.

N47 Engine

We have tuned in excess of 500 of these engines Stages 1 & 2, our extensive R & D on this platform has led us to be making industry leading power figures, fast real world performance whilst maintaining reliability.   

Stage 1 Tuning

Stage 1 tuning requires no mechanical modifications, typically we see these hitting 220- 225 BHP, 450 - 480 NM of torque.  Most people opt for Stage 1 Tuning as all the factory emissions system are left alone, the car remains MOT compliant and there are no visual modifications.

Gearbox Tuning ( Automatic only )

The ZF8 transmission is controlled by the Getrag TCU, whilst in stock format the box works well we can transform the box to behave in a much sportier fashion, improving shift points, shift times gear displays and adjustment of the maximum torque limiter.  These boxes are easily capable of reliably dealing with 600 Nm of torque. 

B47 Engine

Stage 1 Tuning

Stage 1 tuning requires no mechanical modifications, typically we see these hitting 225- 230 BHP, 470 - 500 NM of torque.  Most people opt for Stage 1 Tuning as all the factory emissions system are left alone, the car remains MOT compliant and there are no visual modifications. 

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Gearbox Tuning ( Automatic only )

The ZF8 transmission is controlled by the Getrag TCU, whilst in stock format the box works well we can transform the box to behave in a much sportier fashion, improving shift points, shift times gear displays and adjustment of the maximum torque limiter.  These boxes are easily capable of reliably dealing with 550 Nm of torque. 

Please see further details of gearbox tuning here

No matter what stage of tuning selected all cars are custom tuned on our mechanically linked (X drive safe) 4x4 rolling road.  BMW's X Drive system cannot be safely ran on a normal non linked rolling road and damage to the transfer box will result.  Whilst we see many companies unplugging transfer boxes or disabling the 4 x 4 system via software to run them on a two wheel drive dyno this is far from ideal and often results in massive over readings of torque.   

Before and tuning work commences your car is put on our rolling road, full diagnostics carried out and data logs  taken to establish the health of the vehicle. DPF regeneration and minor adaptions are all carried out before tuning where required at no additional cost.