ultimate tuning logo

Your Trusted Diesel Performance Tuning Specialists

Unleash the full potential of your diesel vehicle with Ultimate Tuning's mobile ECU performance remapping, road dyno and emissions solution services. From cars, utes and vans to heavy commercial trucks and tractors, we've got you sorted. From cars, utes and vans to heavy commercial trucks and tractors, we've got you sorted.

We cover the lower North Island from Wellington to Wanganui, Palmerston North and the Wairarapa.

We specialise in tuning the following popular makes and models, plus many more!

  • AUDI A5, A6, Q5, Q7, S5
  • BMW X5, X6
  • FORD Everest, Mondeo, Ranger, Transit
  • HOLDEN Colorado
  • HYUNDAI Santa-Fe
  • ISUZU D-MAX, Giga, MU-X
  • JAGUAR XF
  • JEEP Grand Cherokee
  • LEXUS 450D
  • MAZDA BT-50
  • MERCEDES E320CDI, E350CDI, ML320CDI
  • MITSUBISHI Canter, Fuso, Outlander, Pajero, Triton
  • NISSAN Caravan/NV350, Patrol CRD, Navara
  • TOYOTA Dyna, Fortuner, Hiace, Hilux, Landcruiser, Toyoace

  • VW Amarok, Crafter, Touareg
Want to see what we can do for your vehicle?

We make it quick and easy to get information and prices for your specific vehicle! 

Simply choose your preferred communication method below:

We will reply with the estimated performance gains, pricing, tuning options, combo deals and any other relevant information you may require. 

Boosted To Perfection

Get more power, improved fuel economy and better performance out of your vehicle with our professional custom remaps – tailored to your vehicle and your needs!

Real-World Road Dyno Results

We weigh your vehicle on our precision motorsport scales and perform a professional road hub dyno test. Compare the stock tune with our tune to see actual gains in Power (HP), Torque (Nm), and G-Forces. You will receive a comprehensive dyno report in PDF format.

Emissions Coding & Diagnostics Done Right!

We offer reliable EGR, DPF and AdBlue coding solutions to help you keep your diesel engine running smoothly and efficiently. Our diagnostic service helps identify the root cause of any Check Engine Light (CEL) problems, so you don’t throw good money after bad.

Diesel Tuning On Wheels

Got places to be? Our mobile tuning workshop comes to you. From performance remaps to coding solutions, minimise your vehicle downtime and get us on site!

Case Studies - Not all tunes are created equal

Our expertise covers a diverse range of diesel vehicles, and as a result we encounter various problems that require our professional services.

Isuzu Giga 380

DPF Issues Solved!

Bruce’s Isuzu Giga 380 heavy transport truck was very sluggish and experiencing frequent DPF clogging, causing damage to the DPF and reverting the engine into limp mode.

 

Ultimate Tuning carried out the entire job on-site, providing a reliable coding solution combined with a custom ECU remap that optimized performance and eliminated the issue.

 

The Isuzu transporter now hauls heavy machinery up the same hills in two gears higher than before while using around 10% less fuel overall.

 

 

Mitsubishi Triton

Dodgy Remap Detected!

Richard brought his Triton to us for an EGR intake clean and a remap. He had previously taken it to another tuning company for a remap, but was not satisfied with the results and did not notice any improvement over the stock tune, even after returning for a second attempt.

Upon inspecting the remap, we found that while it had in fact been modified, very little had been changed from the stock file, with even the torque command parameters remaining untouched!

Ultimate Tuning reset everything back to factory settings and created a new tune file specifically tailored to Richard’s needs, with proper torque command parameters.

The difference in performance after the new tune was like night and day, and combined with the EGR intake clean, the Triton is now operating at its full potential!

Mitsubishi Triton

Dodgy Remap Detected!

Richard brought his Triton to us for an EGR intake clean and a remap. He had previously taken it to another tuning company for a remap, but was not satisfied with the results and did not notice any improvement over the stock tune, even after returning for a second attempt.

Upon inspecting the remap, we found that while it had in fact been modified, very little had been changed from the stock file, with even the torque command parameters remaining untouched!

Ultimate Tuning reset everything back to factory settings and created a new tune file specifically tailored to Richard’s needs, with proper torque command parameters.

The difference in performance after the new tune was like night and day, and combined with the EGR intake clean, the Triton is now operating at its full potential!

Upper Hutt, Wellington

© 2024 Ultimate Tuning NZ

Keen to book a remap?

Have a friendly yarn with us today about how we can achieve your goals!

Upper Hutt, Wellington

© 2024 Ultimate Tuning NZ