Tools, Training, Tune Files & Support for Workshops and Dealers

Your technical partner behind the workshop. We help automotive businesses deliver ECU tuning with programming tools, practical training, tailored tune files and ongoing technical support.

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How Can We Help?

Workshops & Tuning Dealers

– TUNING PARTNERS –

Your Own Vehicle or a Specialist Job

– RETAIL & SPECIALIST –

Need help with your own vehicle or an unusual tuning job? We also take on selected retail and specialist projects.

Testimonials

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Brendon Lang profile picture
Brendon Lang
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Highly Recommended. I had Brno tune my brand new DMAX 2025. While it was a bit tricky being a brand new model, he went above and beyond to ensure everything worked perfectly. Amazing service!!!!! Now the DMAX is in beast mode, with amazing performance.
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Max Igasia profile picture
Max Igasia
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Stage 1 tune organised, very informative and helpful and also broke the whole process down. The tune is absolutely perfect, no issues, hassle free. Appreciate the work that was done! Happy customer, highly recommend even if it’s just an inquiry, these guys will help you out.
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Darren Cudby profile picture
Darren Cudby
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So…… it’s about time this story be told. I see myself as a pretty typical kiwi bloke. I have goals and dreams, a whole heap which are vehicle related!! I was lucky enough to purchase a couple of ‘dream vehicles’…. They did everything I asked of them, but in a pretty underwhelming fashion. I live on a farm, do a tonne of towing and travel distance daily. My Landy got all of these done, but you always felt it had more to offer. It turns out my phone was listening….. low and behold an add appeared to which I made an enquire. Long story short, I explained my situation to Bruno….. to which he said, “I’ve got you”. Within the week he had a prepared a new map specific to my needs, one quick meeting to transfer a file and done. The truck was an entirely new experience. The dream truck performed as it should!!! From then, I’ve had multiple vehicles tuned by Bruno. All of which had different configurations…… each time with specific needs. Bruno is very thorough and on more than one occasion has requested I change /service / monitor components so they enable the tune to function as it should. I have always trusted this advice and because of it, have had many years of trouble free motoring. He went above and beyond early doors, even organising a dyno for my 110 TD5 defender “The Rhino” to show exactly how the performance was enhanced. More recently I had an experience where my EGR gave up in my 110 Puma (Grey 110). The computer sensed this and put the engine into limp mode. I contacted Bruno as my mechanic said we could essentially have the EGR blanked by having the computer command the valve to stay closed. Bruno, true to form went out of his way during an incredibly busy time of year to re-tune the truck. A flying visit was all both parties could manage given it was new years eve!!!! But in that short time Bruno uploaded the new file, sent me off on a test drive, recognised the issue was still present, then through his experience suggested I unplugged the EGR disabling the computer’s sensor. Problem solved, I couldn’t believe the power that was set free!! New year’s road trip saved!! Mate, you continue to amaze me with your talents. The performance, fuel savings and all around drivability gained from your services are most appreciated. I look forward to future projects and to prospective clients I cannot recommend this team highly enough!! More than happy to chat through my experiences as I can assure you it is a game changer. Ngā mihi Darren
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Phil Neal profile picture
Phil Neal
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Had a stage one done on my 2018 CX-9 2.5T. Unbelievable difference. Loads more torque, power and acceleration, super smooth too - and - the team went out of their way to fit me in pre Christmas - awesome all round. Absolutely terrific. 5 stars all day. (THE BEAST courtesy car was a bit of fun too).
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davebgtt profile picture
davebgtt
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I Collected my 2021 Isuzu Dmax today from Brno. I am really happy about the result. The tune has transformed the driving experience imo, turbo lags is gone, the expanded torque range is great, I can have my 6th gear back, motorway overtaking is much improved. It's really really nice to drive!! Thanks Brno!
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Jim Kerr profile picture
Jim Kerr
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Very professional tech and certainly notice difference in get up and go after tune. Look forward to see improvement in fuel consumption
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Kevin Cashmore profile picture
Kevin Cashmore
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Just had my 2019 Mondeo stage 1 tuned by Brno last week. Instantly notice much improved throttle response, and the turbo lag is gone, generally smoother ride. Thanks so much!!!
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Adrian Tong profile picture
Adrian Tong
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Thanks to Brno my Mercedes c320 has been rejuvenated. Despite it's age of 2001, Brno has brought out the hidden potential of an older engine trapped by factory settings with no aftermarket hardware needed The feeling of a more responsive motor with more grunt is a joy and due to the skill of Brno it didn't take much time to achieve. I wish I had more cars for him to do his magic on. Definitely Brno is the man to go to for engine firmware tuning. Adrian T. Wellington.
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Nathan profile picture
Nathan
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Just got my Nissan 370GT tuned by Andrew, Couldn't be anymore happier. Car pulls harder, linear and smoother. Andrew is a experienced tuner who answered all my questions with no hesitation. Would recommend the place. Cheers
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Mahmoud Alibrahum profile picture
Mahmoud Alibrahum
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Great people and great services very professional would absolutely recommend them

Latest News

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New OBD protocol for

New OBD protocol for Continental SID208 ECUs – Fiat, PSA.
KESS3 and Powergate now support light commercial vehicles with 2.2 Multijet and HDi engines, also via the diagnostic port.

Thanks to this update, you can work on Continental SID208 ECUs in OBD mode with KESS3 and Powergate, directly through the vehicle’s diagnostic port, performing read and write operations on the engine ECU.

The new protocol complements the already supported BENCH mode, expanding the range of operations available on diesel light commercial vehicles such as Ducato, Boxer, Jumper and Relay from 2011 onwards.

Work on the widely used 2.2 HDi and 2.2 Mjet diesel engines with a range of benefits for your daily work:

– Direct connection through the diagnostic port
– BENCH mode already available
– ECU reading and writing
– Support with KESS3 and Powergate
– New opportunities on Citroën, Fiat and Peugeot commercial vehicles
– Coverage of widely used diesel applications across different international markets

This new support makes working on Continental SID208 ECUs more immediate, expanding coverage for some of the diesel commercial vehicles most widely found in fleets worldwide.

Technical focus
Connections: OBD
ECU: Continental SID208
Production years: from 2011
Brands: Citroën, Fiat, Peugeot

Supported vehicles
– Citroën Jumper, Relay
– Fiat Ducato
– Peugeot Boxer

🎯 Want to Offer Tuning at Your Workshop? Join our growing dealer network and unlock new revenue streams with full support from Xtremetuning NZ.
📩 Become a Dealer: message us the word DEALER and we'll send you the details
💬 Message us on Facebook
📧 info@xtremetuning.co.nz
📞 0272099992
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Two doors, a low sea

Two doors, a low seat and a Toyota 86 waiting outside. Sometimes that’s enough to improve your plans for the afternoon.

Owning a car you enjoy can turn an ordinary trip into something you actually look forward to. No elaborate excuse required.

If you’re considering a tune, tell us how you’d like yours to feel—and what you already love about it. We’re interested in your version of a good drive.

Where’s your favourite place to stop for a photo?

Book your tune with our approved dealers.
ECU tuning since 2012.

🔧 Want to offer tuning at your workshop?
Let’s talk about joining the Xtremetuning dealer network.

Become a dealer: message us the word DEALER and we'll send you the details
💬 Message us here
📧 info@xtremetuning.co.nz
📞 027 209 9992
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Autotuner capability

Autotuner capability spotlight: Continental EMS10 (CEM1) – Scania V8 & straight-six (BETA)

The Continental EMS10 (CEM1) ECU is supported on the AutoTuner Tool via 100% OBD Normal Read (NR) in BETA mode, released in October 2026. AutoTuner lists the protocol as BETA and asks workshops for feedback.

🔌 Hardware: the AutoTuner 24V OBD Cable.

🚛 Supported lineup (Continental EMS10 / CEM1):
Scania Series R (2018+): 16.4L DC16 (V8)
Scania Series S (2015 – 2018+): 12.7L DC13 & 16.4L DC16 (V8)

Xtremetuning New Zealand: ECU tuning since 2012.

🎯 Want to Offer Tuning at Your Workshop?
Join our growing dealer network with full support from Xtremetuning NZ.
📩 Message us the word DEALER and we'll send you the details
💬 Message us here
📧 info@xtremetuning.co.nz
📞 0272099992
… See MoreSee Less

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Why Workshops Choose Xtremetuning

Partners work with a team that has over 20 years of software programming experience behind every tune file.

Your customers stay yours

You keep your customer base, bookings and pricing. We work discreetly in the background.

Not locked into one tool

Our File Service works with a range of ECU programming tools, and we can help you change tools as you grow.

Support while you learn

Screen sharing and a WhatsApp group in the early stages, so photos and videos are quick to share.

Remote tuning for dealerships

Read the ECU at your workshop, upload the file, and download the finished tune file.

How It Works

Step 1

Tell us about your business, vehicles and existing tools.

Step 2

Get set up with suitable tools, guidance and file-service access.

Step 3

Submit the original ECU file, vehicle information and requirements.

Step 4

Work with our technical team on supported requests and next steps.