BMW 320i F30 Manual: Stage 1 Custom Dyno Tune, 270bhp & 453Nm

This BMW 320i (F30) came in for our Stage 1 custom dyno tune for its B48 2.0 turbo petrol. It’s a manual, so there’s no gearbox software involved: every bit of the gain comes from the engine calibration.

The numbers

On the baseline run it made 188.8bhp and 330Nm. With our calibration it made 270.2bhp and 453Nm, with 233.4bhp at the wheels. That is 81.4bhp and 123Nm 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 to the top of the rev range. Tap Sound on to hear it.

More torque than an F30 340i

BMW’s own F30 340i, with the 3.0 straight-six, makes 450Nm. Tuned, this 320i holds over 400Nm from around 2,250 to 4,650rpm, with 100Nm or more extra torque from around 2,450 to 5,900rpm. Standard, its power peaks at around 188bhp at 4,450rpm and then tails off; tuned, it keeps pulling to 270bhp at around 6,400rpm, with 80bhp or more over standard from around 4,900rpm to the top of the stock run.

How it was done

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

Got a 3 Series? See our BMW 3 Series tuning figures and B48 tuning page, check your car’s gains and price, or see the 320i xDrive Touring and the manual 420d Coupé we have tuned.