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Stage 1 ยท Petrol

Jeep Grand Cherokee (WJ) 1999-2004 4.0 Orvis 174bhp remap figures

Stock, this 1999-2004 Jeep Grand Cherokee petrol (4.0L) produces 174bhp and 301Nm. Our expected figures for a Stage 1 remap are 207bhp and 337Nm, an expected gain of up to 33bhp and 36Nm.

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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 bhp207 bhp+33 bhp
Torque301 Nm337 Nm+36 Nm

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All maps at a glance

MapPowerTorqueExpected gain, up to
Stock174 bhp301 Nm
Stage 1Maximum software-only performance207 bhp337 Nm+33 bhp
+36 Nm
Stage 1 EcoPerformance with economy in mind199 bhp334 Nm+25 bhp
+33 Nm
Eco mapEconomy first196 bhp332 Nm+22 bhp
+31 Nm

Who is the Stage 1 map for?

  • Drivers who want a sharper throttle and a small, honest gain from software alone.
  • Owners who would rather keep the car standard in every other way.
  • Anyone who wants the fullest software-only map for this engine, accepting that the gain is modest without a turbocharger.

What this means for your Grand Cherokee

Naturally aspirated petrol engines have no boost to raise, so gains from software alone are more modest than on a turbocharged car and come from fuelling, ignition and throttle response.

Engine management is by a Motorola 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 Jeep Grand Cherokee 4.0 Orvis 174bhp?

We expect 207bhp and 337Nm against 174bhp and 301Nm as standard: up to +33bhp and +36Nm. 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 Jeep Grand Cherokee 4.0 Orvis 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: 199bhp and 334Nm expected. The Eco map is economy first: 196bhp and 332Nm. Both still sit above the standard 174bhp and 301Nm.

Do I need to tell my insurer about a remap?

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