Your Vehicle
John Deere 9Rserie 9420 R - 13.5L - 420hp
Technical Specifications
Power and torque increase
Stage 1: software remap only, no mechanical changes, fully reversible.
Stage 1: file 122 € online + installation 350 € at the workshop (via the OBD port) Book now
Power HP
Torque Nm
Buy the Stage 1 file, pay the installation at the workshop
122 € VAT included (€100 + VAT): the file developed for your engine, paid online
Installation: 350 € network price, the workshop may charge less, paid at the chosen workshop (via the OBD port) · terms
Power Graph
John Deere 9Rserie 9420 R - 13.5L - 420hp: da 420 a 470HP
Remapping John Deere 9Rserie
MasterTuning develops remapping for John Deere. La John Deere 9Rserie 9420 R - 13.5L - 420hp può passare da 420 HP a 470 HP con un incremento di 50 HP.
The development of each remap is customized by MasterTuning.
- 100% customised files with lifetime warranty
- Reference values for Stage 1: the file is developed on your vehicle and checked in the workshop
- Best performance, within safety margins
- Reduced fuel consumption
ECU Remapping Details John Deere 9Rserie 9420 R - 13.5L - 420hp
The John Deere 9Rserie 9420 R - 13.5L - 420hp is equipped with a diesel engine that produces 420 HP and 1938 Nm of torque in its factory configuration. With MasterTuning's professional ECU remapping, this John Deere can achieve 470 HP (+12%) and 2100 Nm (+8%).
Our Stage 1 tuning for the 9Rserie All delivers an impressive gain of +50 HP and +162 Nm, optimizing the diesel engine's performance while maintaining reliability and staying within safe parameters.
The Phoenix L33 ECU is professionally recalibrated to unlock hidden potential while preserving engine longevity.
As a diesel engine, this John Deere responds exceptionally well to ECU tuning. Owners typically report improved throttle response, smoother power delivery, and in many cases, better fuel efficiency under normal driving conditions.
Technical Specifications — John Deere 9Rserie 9420 R - 13.5L - 420hp
Factory technical data for the John Deere 9Rserie 9420 R - 13.5L - 420hp (All), used by MasterTuning engineers to develop a remap tailored to this specific powerplant. Figures shown are reference values for Stage 1; the file is developed on your vehicle and checked in the workshop.
| ECU / Control unit | Phoenix L33 |
|---|---|
| Fuel | Diesel |
| Stock power | 420 HP · 1938 Nm |
| Remapped power (Stage 1) | 470 HP (+50) · 2100 Nm (+162) |
Don't want to touch the ECU?
Rapid Dimsport add-on modules connect to the engine sensors with original connectors: they fit in a few hours and come off without a trace, leaving the factory software untouched. Useful on a leased car, one still under warranty or one you plan to sell soon. Check which ones fit your John Deere 9Rserie.
Frequently Asked Questions - John Deere 9Rserie
How much power can I gain from remapping my John Deere 9Rserie?
With MasterTuning Stage 1, your John Deere 9Rserie 9420 R - 13.5L - 420hp can gain +50 HP (from 420 to 470 HP) and +162 Nm of torque. This represents a 12% increase in power.
Which ECU does the John Deere 9Rserie 9420 R - 13.5L - 420hp use?
The John Deere 9Rserie 9420 R - 13.5L - 420hp uses the Phoenix L33 engine control unit. MasterTuning recalibrates this ECU for Stage 1 and Stage 2.
Is ECU remapping safe for the John Deere 9Rserie engine?
Yes, MasterTuning's remapping for the John Deere 9Rserie 9420 R - 13.5L - 420hp is developed within safe parameters. Each file is developed on your vehicle, checked in the workshop and stays within the mechanical limits of the engine.
Is the John Deere ECU remapping reversible?
Absolutely. The original factory calibration of your John Deere 9Rserie is always backed up before remapping. The process is 100% reversible at any time.
Will remapping affect my John Deere warranty?
ECU remapping may affect your manufacturer warranty. We recommend checking your specific warranty terms. Many of our customers choose to remap after the warranty period or accept this trade-off for the significant performance gains.
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Book your remap or ask for a quote
Stage 1 can be bought online and is done at the workshop you choose; for Stage 2 we send you a quote.
Stage 2 is quoted on request: write to us and we will reply with price and timing.
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-15% on Stage 1 if you ask for the quote now (valid 7 days)