Fiat Performance Tuning
0800 328 886
Fiat 500
Fiat Panda
Fiat Tipo
Fiat Abarth
Fiat Ducato
1.4 T-Jet turbo petrol
1.4 MultiAir turbo petrol
2.0 MultiJet turbo diesel
Abarth performance engines



If you have a specific question regarding your Fiat that is not answered here, please give us a call or submit the enquiry form because we can help - we will assist you personally.
Yes - the T-Jet and Abarth MultiAir engines are well-understood platforms with a global tuning community behind them. Abarth in particular builds its cars to handle performance driving, with stronger internals than standard Fiat variants. Stage 1 tuning stays within safe boost and fuelling limits, and we run these tunes on NZ 98 RON which is important for knock-sensitive small-displacement turbocharged engines. We log knock activity and boost response before finalising every calibration.
Yes - the Ducato 2.3 MultiJet diesel is a robust commercial engine that handles conservative Stage 1 calibration well. Torque gains of 60–100Nm make a real difference when the van is loaded with tools or the motorhome is fully loaded for a trip. Highway overtaking improves noticeably, and the engine doesn't have to work as hard at cruise speeds, which can improve fuel economy on long runs - relevant for any Ducato doing regular highway kilometres.
An Abarth 595 Competizione (around 132kW standard) gains 20–35kW on Stage 1, taking it to approximately 150–165kW. For a car weighing around 1,100kg, that's a significant improvement in power-to-weight ratio. The gains are most noticeable in the 3,000–5,500RPM range where the T-Jet is most characterful - the car feels noticeably more urgent and rewarding to drive quickly.
For any tuned T-Jet or Abarth engine, we strongly recommend 98 RON. These small-displacement turbocharged engines are sensitive to fuel quality, and the ignition timing advance that delivers the performance gains requires premium octane to avoid knock. Running 95 RON on a tuned Abarth will result in the ECU retarding timing to protect the engine, which reduces the benefit of the tune. We calibrate on 98 RON and specify this as the minimum fuel requirement.
Improve your Fiat's performance with expert ECU tuning in Auckland. Contact us today and we'll tell you exactly what gains your Abarth 595, 500 or Ducato can achieve.
Real Drivers, Real Results.
We're proud of the results we deliver, but don't just take our word for it. Read what our satisfied customers have to say about their experience with our professional mobile tuning service and the real-world performance gains they've enjoyed.
Auto Tune were exceptional. Their attention to detail and deep technical knowledge were evident throughout the tuning process. They managed to unlock the hidden potential of my vehicle, providing a noticeable boost in power and responsiveness. I highly recommend their services to any enthusiast.
2018 Subaru Forrester - Howick
I was thoroughly impressed with the friendly and efficient service at Auto Tune. They transformed my car’s performance while maintaining reliability, striking the perfect balance. The difference in the driving experience is night and day, and the entire team was a pleasure to deal with. I will definitely be a returning customer.
2020 Audi RS6 - Takapuna
I brought my diesel ute in looking for more pulling power, and the team at Auto Tuning absolutely delivered. The difference in low-end torque is massive; it now hauls heavy loads up hills without breaking a sweat. The biggest surprise has been the improvement in fuel economy during my daily commute. A proper, professional tune.
2021 Ford Ranger - Henderson