Dodge Performance Tuning
0800 328 886
Dodge Charger
Dodge Charger SRT
Dodge Charger Hellcat
Dodge Challenger
Dodge Challenger SRT
Dodge Challenger Hellcat
Dodge Durango SRT
6.2L supercharged HEMI V8 (Hellcat)
6.4L HEMI V8 (392)
5.7L HEMI V8
2.0T Hurricane turbo petrol
If you have a specific question regarding your Dodge 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 HEMI V8 family is massively over-engineered with thick-walled blocks, forged rotating assemblies and a well-documented tuning history. The Hellcat's 6.2L supercharged engine in particular has strong internals designed to handle sustained high-load operation. Stage 1 tuning operates within the engine's proven limits. We run all HEMI tunes on NZ 98 RON and log AFR and timing data throughout the power range before delivery.
A transmission tune is strongly recommended for HEMI V8 builds. The TorqueFlite 8-speed is a robust unit, but its factory shift logic is calibrated for comfort and compliance rather than performance. After an engine remap, a transmission tune sharpens shift timing dramatically, improves torque converter lockup earlier and adjusts the shift points to keep the HEMI in its power band longer. The difference in-car is immediately noticeable.
A standard Hellcat (around 527kW) gains 40–65kW on Stage 1, pushing it past 570–590kW. A 392 HEMI gains 30–50kW from around 360kW. Even a 5.7L HEMI picks up 25–40kW, which in a car this heavy makes a genuine real-world difference. For Hellcat owners, the Stage 1 gains make an already devastating car feel even more urgent - particularly in the 3,500–5,500RPM range where the supercharger really loads up.
We calibrate all HEMI tunes on NZ 98 RON and it's the recommended fuel post-tune. The HEMI's knock control system will retard timing on lower octane fuel to protect the engine, which reduces the benefit of the tune. Running 95 RON won't damage the engine, but it will give you less of the performance gains you paid for. New Zealand's major fuel brands all offer 98 RON - it's widely available and the cost difference per tank is minor compared to the performance difference.
Unlock your Dodge's performance with expert ECU tuning in Auckland. Contact us today for a clear breakdown of what your Charger, Challenger or Hellcat 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
