Is It Worth Remapping a BMW 330d or 335d?

The 330d and 335d are two of the best diesels BMW ever built — and two of the most rewarding to tune. So is a remap actually worth it? For most owners, yes. Here's why.

The gains

On a Stage 1 custom map, a 330d (N57) typically goes from around 255bhp to 330bhp, and a 335d (N57S) up to around 390bhp — with big torque increases on both. Healthy, safe gains from software alone, no hardware needed.

It's the torque you'll feel

Peak power is one thing, but it's the extra mid-range torque that transforms these cars day to day — effortless overtaking, relaxed motorway cruising and stronger pull from low revs. Many owners say it feels like a bigger-engined car.

Pair it with xHP

Both use the ZF8 automatic, so we usually recommend xHP gearbox tuning alongside — firmer, faster shifts and a higher torque limit so the gearbox makes the most of the extra torque.

So — is it worth it?

For a safe, reversible, dyno-proven upgrade that genuinely changes how the car drives, it's one of the best-value things you can do to a 330d or 335d. Check your car's gains or get a free quote.