Loading
We calibrate the original software of your Jeep Grand Cherokee (WK) with the 6.1 V8 16v HEMI (SRT8) individually, for more power, more torque and sharper throttle response. Bring the car to us in Stödtlen or send us the ECU.
Choose stage and options yourself, plus an on-site appointment or sending in the ECU. One fixed price, the same for both.
Stage 1 from220 €
Configure nowTypical range for this ECU family, no power guarantee. The result depends on engine condition, fuel and original software.
Your 6.1 V8 16v HEMI runs on the MOTOROLA NGC4 ECU (Chrysler/Motorola NGC4/NGC5 (Dodge/Jeep HEMI 5.7/6.1/6.4, Viper 8.4, Wrangler 3.8) family). We read out the original software, back it up and adapt the maps individually. No off-the-shelf file.
Naturally aspirated engines gain less power by nature. We optimise ignition timing, mixture and the throttle map; what you notice most is sharper response.
The original stock software can be restored at any time.
| Feature | Stock | Stage 1 | Stage 2 |
|---|---|---|---|
| Power | 420 PS | +3–8 % (guide value) | above Stage 1, depends on hardware |
| Additional hardware | – | none (software only) | headers and/or 200-cell sport cat |
| Fixed price | – | 220 € | 270 € |
Power figures are typical ranges (guide values) for this ECU family, not dyno measurements and not a guarantee. Stage 2 requires modified hardware.
You can add these options for your ECU right away:
On request, depending on engine and software version. We check it on your original file:
ECO TuningLaunch ControlHardcut LimiterPops and BangsPopcorn LimiterAGR/EGR OffSAP DeleteCold Start DeleteSwirl Flap DeleteStage 2+
Configure & order
Choose stage and options, on site or send-in, at one fixed price.
Appointment or shipping
On site in Stödtlen on your preferred date, or send us the removed ECU, insured.
Individual calibration
We read out the original software, back it up and adapt it to your engine.
Done
On site you drive off right away; a sent-in ECU goes back to your delivery address programmed.
Same price, on site or sent in.
No franchise, no mass production. Every tune is handcrafted.
Usage notice
The software change voids the type approval of your vehicle. The software is intended for motorsport use only. Learn more
Jeep Grand Cherokee (WK) · 6.1 V8 16v HEMI SRT8