Audi S5 3.0 TFSI: Stage 1 + TCU, 421bhp & 623Nm

This Audi S5 3.0 TFSI came in for our Stage 1 custom dyno tune, with the automatic gearbox calibrated alongside it (TCU calibration), so the engine and gearbox were developed together.

The numbers

On the baseline run it made 354bhp and 541Nm. After the calibration it made 421bhp and 623Nm:

Around 100Nm more through the mid-range

Stock, this S5 peaked early at 541Nm around 2,100rpm and then dipped away through the middle of the rev range. Tuned, it builds to 623Nm at around 3,350rpm and carries roughly 100Nm more from 2,600rpm to over 5,000rpm, while power holds above 410bhp from 5,000rpm to the end of the run. The TCU calibration lets the gearbox handle that extra torque properly, with sharper, quicker shifts.

How it was done

Diagnostics and a health check first, baseline runs on our 4WD linked dyno, then a calibration developed with live data logging and repeated runs before the final verification pulls. No generic files, original software backed up and fully reversible.

Got an S5? See our Audi S5 tuning figures, check your car’s gains and price, or read about the Touareg V6 TDI we tuned.