EUROPEAN VEHICLE PERFORMANCE TUNING · AUCKLAND
More effortless performance from your Jaguar XJ
The Jaguar XJ carries its pace with composure, and ECU tuning from Harrys Euro Tuning builds on that character with a more assured response to measured throttle inputs. Pulling away from lights, joining a flowing motorway or settling into a long-distance cruise feels more direct, while the delivery remains smooth and appropriately polished.
A performance tune gives the driver a clearer connection between pedal movement and forward momentum. HE Tuning sharpens the way the Jaguar XJ gathers speed for passing traffic, helping it maintain an unhurried, confident manner without upsetting its refined nature. Power arrives with greater purpose rather than suddenness, supporting easy progress when the road asks for more.
This approach keeps the XJ’s luxury GT appeal firmly intact: calm in ordinary use, composed at pace, and more satisfying when useful acceleration is called upon.
- Stronger mid-range power and torque
- Sharper accelerator response
- Refined everyday drivability
European performance tuning completed and supported by Harrys Euro in Auckland.
Vehicle-specific performance
See Your Vehicle’s Published Potential
Performance figures are indicative and may vary with vehicle condition, fuel and existing modifications.
More than a generic remap service
European Tuning Backed by Workshop Knowledge
Harrys Euro works with European vehicles across performance parts, diagnostics, servicing and tuning. Your vehicle is supported by a team that understands the wider platform—not only the engine software.
European Vehicle Focus
Our workshop focuses on European marques and the engine, transmission and electronic systems that shape how these vehicles drive.
Matched to Your Selected Vehicle
The performance calibration is matched to the vehicle and engine option selected on this page.
Parts, Diagnostics and Tuning Together
Relevant servicing, diagnostics and supporting performance parts can be handled by the same Harrys Euro team.
Local Support After Collection
You have a local Auckland point of contact before the booking, during the work and after collecting the vehicle.
Customer experiences
What European Vehicle Owners Say
A simple workshop process
From Online Order to Finished Vehicle
Harrys Euro manages the booking, selected tuning services, final checks and local support as one straightforward workshop process.
Booking Confirmation
After checkout, Harrys Euro contacts you to arrange a suitable workshop date and confirm the vehicle details supplied with the order.
Morning Drop-Off
Bring your Jaguar XJ to our Wairau Valley workshop at the agreed time.
Selected Tuning Services
Our team completes the selected engine tune. When a transmission tune has also been selected, both services are completed during the same workshop booking.
Final Checks and Handover
The relevant final checks are completed before the vehicle is returned, with local support available afterwards.
SAME-DAY WORKSHOP SERVICE
Drop Off in the Morning. Drive Away in the Afternoon.
Most engine tunes—and any transmission tune selected with them—are completed during one workshop visit. If a different timeframe applies to your vehicle, Harrys Euro will explain this when arranging the appointment.
Morning Drop-Off
Bring your Jaguar XJ to Harrys Euro and leave the vehicle with our workshop team.
Performance Tuning
The selected engine and transmission tuning services are completed, followed by the relevant checks.
Afternoon Pick-Up
Collect your Jaguar XJ and enjoy stronger mid-range performance, sharper response and more confident everyday driving.
Simple answers before you order
Frequently Asked Questions
What happens after I order?
Harrys Euro will contact you to arrange a suitable workshop date. Bring the vehicle to our Wairau Valley workshop at the agreed time and collect it after the selected tuning services and final checks are complete.
How long does the tuning take?
Most engine tunes and optional transmission tunes are completed within the same working day. Harrys Euro will advise you during booking if your vehicle requires a different timeframe.
Will the vehicle still feel smooth in everyday driving?
The tune improves usable power, mid-range response and accelerator feel while retaining the smooth road manners expected from your Jaguar XJ.
- Unsure about fitment?
Chat with our performance expert - NZ's largest Online performance parts store
- All products backed by manufacturer warranty
- 100% genuine parts
- Hassle-free 30-day returns & refunds
- Competitive pricing
Seen a better price elsewhere? Let us check - Workshop installation available
- Fast 1-3 days dispatch on in-stock items
- Shipping from only $11.90
- Click & collect available
- Dealer-level MTA workshop
- Expert tuning, upgrades, and servicing
- Visit us: 15a parkway drive, Rosedale, Auckland
- Open 6 days
