BMW Series 3 335i N54 Stage 1: 306→374hp | DMS Tuned

BMW Series 3 335i N54 Stage 1: 306→374hp

BMW Series 3 335i N54 Stage 1: 306hp → 374hp, 400→504Nm. Custom DMS calibration written for your car — not an off-the-shelf file. From €450. Athens +…

BMW Series 3 Stage 1: 306 hp → 374 hp

Factory output for the BMW Series 3 335i N54 is 306 hp and 400 Nm. A Stage 1 remap targets 374 hp and 504 Nm — 68 hp (+22%) and 104 Nm (+26%).

Those are the figures we work to on this engine. They are a starting point, not a promise: the number we hand back is the one your car makes on our dyno, measured before and after on the same day, in the same conditions.

What 68 hp changes on the road

Taking the 335i N54 from 306 hp to 374 hp, with torque from 400 Nm to 504 Nm, is felt less as a bigger top number than as a shorter wait for it — the engine answers the throttle sooner and holds the pull further up the rev range.

Tell us the exact engine code and we will say precisely what is on the table for your car before you commit to anything.

What Stage 1 involves on a BMW Series 3

We read the ECU, log the car as it stands, and put it on the dyno to confirm the 306 hp baseline — a tired or faulty engine gets diagnosed before it gets mapped, not after.

The calibration is written for your car, not pulled from a file library. We adjust fuelling, ignition timing and throttle mapping, then re-run the dyno to verify the 374 hp and 504 Nm figure and check knock, lambda and temperatures under load.

Turnaround is same-day for most cars. Stock file is archived, so the car can go back to standard whenever you want.

Which BMW Series 3 this covers

These figures are for the 335i N54 as fitted 2005–2010. Engine code and ECU type decide what is possible, so send us the registration or VIN and we will confirm the exact variant before you book anything.

BMW Series 3 remap price and booking

Stage 1 for the BMW Series 3 335i N54 starts at €450, including the dyno runs before and after and the stock-file archive.

We work from Leoforos Karamanli 127, Artemida 19016, east of Athens, and tune remotely across Europe where the ECU allows it. WhatsApp +30 697 728 8810 with your registration for a straight answer on your car.

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