Mini Performance Tuning
0800 328 886
Mini Cooper
Mini Cooper S
Mini JCW
Mini Countryman
Mini Clubman
B38 1.5T turbo petrol
B48 2.0T turbo petrol
N14 1.6T turbo petrol
N18 1.6T turbo petrol (Cooper S/JCW)
If you have a specific question regarding your Mini 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 B48 is BMW's current main turbocharged four-cylinder, used across a wide range from the 118i to the M135i xDrive. The Cooper S runs the same engine at around 141kW while the M135i pushes 225kW from identical hardware. This demonstrates the internals are well within safe territory at Stage 1 power levels. We validate on NZ 98 RON and log boost and knock behaviour across the rev range before delivery.
Yes - the N14 and N18 turbocharged engines in earlier Cooper S and JCW models have a well-developed global tuning track record. The N14 in particular responds strongly, with Stage 1 gains of 25–40kW. These engines do require more attention to knock management than the newer B48, and running 98 RON is strongly recommended. We've tuned many N14 and N18 Minis - they're enjoyable platforms with a solid community base of supporting knowledge.
A JCW with the B48 2.0T (around 170kW standard) typically gains 25–40kW on Stage 1, pushing it to 195–210kW. With supporting hardware (intake, catless downpipe), Stage 2 can approach 240kW. The JCW already has a sharper factory tune than the Cooper S, but there's still meaningful headroom - particularly in the 2,500–4,500RPM band where the Mini character really lives. The improvement in driving feel is immediate and significant.
The Aisin 7-speed automatic in the Countryman and Clubman handles Stage 1 torque levels well. The 6-speed Getrag manual in the JCW is robust by design. If you're planning Stage 2 with significant power increases, the manual gearbox benefits from upgraded clutch components, and we'll advise accordingly. For Stage 1 on either gearbox type, no additional transmission work is required.
Improve your Mini's performance with expert ECU tuning in Auckland. Get in touch today - we'll outline exactly what your Cooper S or JCW 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
