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Stage 1 Β· Diesel

Volkswagen Transporter T5 2004-2006 2.5 TDI PD 174bhp remap figures

Stock, this 2004-2006 Volkswagen Transporter T5 diesel (2.5L) produces 174bhp and 400Nm. Our expected figures for a Stage 1 remap are 224bhp and 511Nm, an expected gain of up to 50bhp and 111Nm.

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Stage 1 remap figures

A Stage 1 remap is a software-only change to the ECU on an otherwise standard car. It needs no extra parts, which makes it the usual starting point.

StockVanguard expectedExpected gain, up to
Power174 bhp224 bhp+50 bhp
Torque400 Nm511 Nm+111 Nm

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All maps at a glance

MapPowerTorqueExpected gain, up to
Stock174 bhp400 Nm
Stage 1Maximum software-only performance224 bhp511 Nm+50 bhp
+111 Nm
Stage 1 EcoPerformance with economy in mind212 bhp502 Nm+38 bhp
+102 Nm
Eco mapEconomy first208 bhp497 Nm+34 bhp
+97 Nm

Who is the Stage 1 map for?

  • Drivers who want stronger pulling power for overtaking, hills and towing, with no parts to fit.
  • Daily and motorway drivers who want the engine to feel less strained at cruising speed.
  • Anyone who wants the biggest software-only change we list for this engine.

What this means for your Transporter T5

On a diesel the biggest change is normally torque: the remap changes how much fuel and boost the ECU allows across the rev range, so pulling power arrives earlier and holds on longer.

Engine management is by a Bosch EDC16U unit. Older engine management is simpler to work with, but age matters: worn sensors, leaks and tired components can hold back what a remap delivers, which is why we run a diagnostic check first.

We remap at our Belgrave Gate workshop in Leicester, or at your home or work within 30 miles, and every job starts with a diagnostic check.

Please note: these are expected figures, not guarantees. Real results vary with the condition of the vehicle, the ECU software version, fuel quality and the hardware fitted. Some options - including Stage 2 and anything that needs extra hardware - are for off-road or competition use only. We check every vehicle first and confirm what is achievable before any work starts.

Figures reviewed 22 October 2026.

Stage 1 questions

How much power does the Stage 1 map give the Volkswagen Transporter T5 2.5 TDI PD 174bhp?

We expect 224bhp and 511Nm against 174bhp and 400Nm as standard: up to +50bhp and +111Nm. These are expected figures, and we confirm what is achievable on your own car after a diagnostic check.

Does a Stage 1 remap need any extra parts on the Volkswagen Transporter T5 2.5 TDI PD 174bhp?

No. Stage 1 is a software-only change to the ECU on an otherwise standard car.

Is there a gentler map than Stage 1 for this engine?

Yes, two. Stage 1 Eco is performance with economy in mind: 212bhp and 502Nm expected. The Eco map is economy first: 208bhp and 497Nm. Both still sit above the standard 174bhp and 400Nm.

Do I need to tell my insurer about a remap?

Yes. A remap is a modification, so you should declare it to your insurer.