Stage 1 Eco · Petrol

Vauxhall Vectra (C) 2006-2008 1.8 VVT 138bhp Stage 1 Eco remap figures

The Stage 1 Eco map for the Vauxhall Vectra 1.8 VVT 138bhp (2006-2008): 149bhp and 190Nm expected from a standard 138bhp and 175Nm, up to +11bhp and +15Nm. It keeps most of the Stage 1 gain (Stage 1 is 152bhp and 191Nm) and is tuned with economy in mind: the choice if you want the performance and care what each tank costs.

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Stage 1 Eco remap figures

Stage 1 Eco is performance with economy in mind. It keeps most of the Stage 1 gain, so the car still pulls well, but the map is shaped for efficient, relaxed driving rather than flat-out output. It is above the standard figures. We don't quote mpg, because economy depends on the car and how it is driven.

	Stock	Vanguard expected	Expected gain, up to
Power	138 bhp	149 bhp	+11 bhp
Torque	175 Nm	190 Nm	+15 Nm

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All maps at a glance

Map	Power	Torque	Expected gain, up to
Stock	138 bhp	175 Nm
Stage 1Maximum software-only performance	152 bhp	191 Nm	+14 bhp +16 Nm
Stage 1 EcoPerformance with economy in mind	149 bhp	190 Nm	+11 bhp +15 Nm
Eco mapEconomy first	147 bhp	189 Nm	+9 bhp +14 Nm

Who is the Stage 1 Eco map for?

Naturally aspirated owners who want a little more response and a more efficient, relaxed drive. Every map we list stays above standard.
Drivers who want the small gain on offer without chasing peak output.
Anyone who would otherwise take the full Stage 1 map but wants it tuned with economy in mind.

How Stage 1 Eco compares with Stage 1

Full Stage 1 on this Vauxhall Vectra is expected to give 152bhp and 191Nm (+14bhp, +16Nm). The Stage 1 Eco keeps about 79% of that power gain and 94% of the torque gain, so you get 149bhp and 190Nm: 3bhp less and 1Nm less than Stage 1, with the map shaped for efficient, relaxed driving, so it suits you if you want the pull and care about running costs. Both sit above the standard 138bhp and 175Nm.

What this means for your Vectra

Without a turbocharger the improvement comes from ignition, fuelling and throttle mapping rather than boost, so expect a smaller but still noticeable change in response.

Engine management is by a Siemens Simtec 75 unit. We read the ECU on your car and compare it with the software listed here before any work starts, so you know what to expect before you commit.

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 Eco questions

How much power does the Stage 1 Eco map give the Vauxhall Vectra 1.8 VVT 138bhp?

We expect 149bhp and 190Nm against 138bhp and 175Nm as standard: up to +11bhp and +15Nm. These are expected figures, and we confirm what is achievable on your own car after a diagnostic check.

How does Stage 1 Eco differ from Stage 1 on this engine?

Full Stage 1 is expected to give 152bhp and 191Nm. Stage 1 Eco gives 3bhp less and 1Nm less, in exchange for a map shaped with economy in mind. It still sits above the standard figures.

Is Stage 1 Eco or the Eco map better for me?

Choose Stage 1 Eco if you want the performance (149bhp and 190Nm) and still care about running costs. Choose the Eco map (147bhp and 189Nm) if economy matters more than pace.

Will the Stage 1 Eco map save fuel?

It is tuned with economy in mind while keeping most of the Stage 1 performance. We do not quote mpg figures, because economy depends on the car, its condition and how it is driven.

Do I need to tell my insurer about a remap?

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

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