BMW 335d xDrive Touring F31: Stage 1 + xHP Stage 3, 386bhp & 774Nm

This BMW 335d xDrive Touring (F31) came in for our Stage 1 custom dyno tune for the N57 3.0 twin-turbo diesel, with an xHP Stage 3 calibration for its ZF 8-speed automatic, both developed on the same visit.

The numbers

On the baseline run it made 302.2bhp and 606Nm. With our calibration and xHP Stage 3 it made 386.9bhp and 774Nm, with 330.0bhp at the wheels. That is 84.7bhp and 168Nm more:

Watch the full dyno run

This is the final pull on our dyno, filmed from behind the car, from the start of the run right through to the end. Tap Sound on to hear it.

More torque than a BMW M3 Touring

BMW’s own M3 Touring makes 650Nm from the factory. Tuned, this 335d holds over 750Nm from around 2,000 to 2,750rpm and over 700Nm all the way to 3,650rpm, with 150Nm or more extra torque from around 2,000 to 3,850rpm. Power stays above 370bhp from around 3,750 to 5,000rpm, with 80bhp or more over standard from around 3,250rpm to the top of the stock run.

The gearbox, tuned with the engine

xHP Stage 3 was flashed into the ZF 8-speed on the same visit. It removes the factory torque limiter and raises line pressure for the extra torque, with quicker shifts in D and harder, faster shifts in Sport and Sport+, so the engine and gearbox are calibrated as one package instead of two separate jobs.

How it was done

Diagnostics and a health check first, then baseline runs on our 4WD linked dyno with live data logging. The engine calibration was built from there with repeated runs, the gearbox was flashed with xHP Stage 3, and the final pulls verified the result. No generic files: a calibration written for this car, proven on our dyno.

Got an N57? See our BMW 35d tuning page and BMW 3 Series tuning figures, check your car’s gains and price, or read about the 335d xDrive F30 saloon we have tuned.