Jeep Grand Cherokee Wj 1999 2004 remap
Diesel · Flash via OBD · Figures published for this engine · Remote remap available UK-wide from £199
Is a remap worth it on the Jeep Grand Cherokee Wj 1999 2004?
A worthwhile remap. The gain is clearly felt on the road, especially in the mid-range where the torque increase lands.
What each stage needs
| Stage | Power | Torque | Hardware |
|---|---|---|---|
| Standard | 161 bhp | 400 Nm | None |
| Stage 1 | 205 bhp | 481 Nm | Software only |
Risk on this engine: medium
- High 27% gain: substantial stress on turbo(s) and fuel system.
- Diesel: no knock risk. Primary risks are EGT, turbo health, and injector wear.
How to keep the risk down
- Uprated intercooler strongly recommended.
- Full engine health check required.
- Verify fuel pump condition.
- Monitor EGT under hard driving: sustained temps above 700 C accelerate turbo wear.
- DPF (if fitted) will accumulate soot faster: ensure it is in good condition.
- Keep a copy of the original ECU file before flashing.
Remote remap for your Jeep Grand Cherokee Wj 1999 2004: Stage 1 from £199
No trip to a workshop. ORCA Remapping, part of the same company as BeakCheck, tunes your car's own ECU file and sends it back, UK-wide.
| Service | Price | Needs |
|---|---|---|
| Stage 1 Remote | £199 | Standard car, software only. 205 bhp and 481 Nm on this engine. |
| Diagnostic file analysis | £49 | Read-only check of the existing file: detects a previous tune before you buy a used car. |
Paid up front on orcahq.co.uk once ORCA confirms your engine and tool. Or ask first, no obligation:
Questions owners ask
How much power does a Jeep Grand Cherokee Wj 1999 2004 gain from a remap?
A Stage 1 remap adds about 44 bhp and 81 Nm, taking it from 161 to 205 bhp. Stage 1 is software only.
Is it safe to remap a Jeep Grand Cherokee Wj 1999 2004?
Remap risk is rated medium (5/10). High 27% gain: substantial stress on turbo(s) and fuel system. Uprated intercooler strongly recommended.
Does a remap affect the MOT or insurance on a Jeep Grand Cherokee Wj 1999 2004?
A remap does not affect the MOT test, which does not read the ECU calibration. It is a modification for insurance purposes and must be declared to your insurer; most mainstream insurers accept a declared Stage 1 with a premium adjustment.
How is a Jeep Grand Cherokee Wj 1999 2004 remapped?
Through the OBD diagnostic port in the cabin. The original file is read and saved first, then the modified calibration is written. Typically under two hours.
Check your exact car by registration
Free DVLA and MOT check, plus the remap verdict for the engine actually fitted to your car.
Other Jeep engines
Remapping guides
Power figures are published Stage 1 and Stage 2 results for this engine and are a guide. Actual gains depend on the car's condition, fuel and the map used. BeakCheck and ORCA Remapping are trading names of Bloor Engineering Ltd.