More Power.
Proven Gains.
Zero Compromise.
Custom ECU remapping, AdBlue, DPF & EGR solutions, and onsite tuning for tractors and farm machinery — measured and proven on the dyno.
Tuning Diesel The Right Way
Hitech Diesel is a local, independent diesel specialist serving Canterbury, the West Coast and beyond. We don't load generic, off-the-shelf files — every remap is written for your exact vehicle, its condition, and how you actually use it.
From daily-driver utes to hard-working tractors and forage harvesters, our work is verified on the dynamometer so you get the gains you paid for — more torque, cleaner running, and the reliability to back it up.
Our Services
Whatever runs on diesel, we sort it — the everyday ute in the driveway through to the gear working out in the paddock. Every tune is written from scratch for your machine and proven before it leaves us.
ECU Remapping
Custom diesel tunes written specifically for your engine. More torque and sharper throttle response in a single remap.
DPF Solutions
A troublesome DPF brings constant warning lights, limp-home faults and downtime. We provide a clean, reliable solution that gets the engine running the way it should.
EGR Solutions
A problematic EGR set up means rough running, carbon build-up and ongoing reliability headaches. Our solution leaves your engine running smoother & more efficient.
AdBlue Solutions
AdBlue and SCR systems are expensive and frustrating when they play up. We deliver a reliable solution so faults and warnings can't leave you stranded.
Tractor & Farm Machinery
We come to you. Onsite tractor, harvester, and ag-machinery tuning across Canterbury and the West Coast — no need to transport your gear off the farm.
Machinery Tuning, Done On Site
Harvesters, tractors, and heavy ag equipment lose money every hour they're parked. We bring the gear to you — or take it into the workshop — tune it properly, then prove the result on the dyno before it goes back to work.
- Forage Harvesters
- Tractors
- Telehandlers
- Sprayers
- Headers
Specialists. Not A Sideline.
Our team are local trade-qualified technicians and have worked across heavy diesel, autonomy, and agri R&D internationally — now remapping is what we do.
That depth of experience means you get a specialist, not a workshop that offers remapping on the side.
Canterbury Based
Christchurch and Canterbury based, with reach across the South Island. Fast turnaround with nothing shipped overseas.
Custom Tunes Only
No generic off-the-shelf maps. Every file is written fresh for your vehicle's actual condition and use.
We Come To You
Onsite tuning for tractors and machinery. No downtime hauling equipment across the region.
Dyno Verified
Results measured on the dynamometer — you see the real gains, not marketing claims.
Straight Talking
We tell you what your vehicle actually needs, not what makes us the most money. Honest advice, every time.
Grown In Agriculture
Our software is modified by local, qualified, experienced personnel. We know how your gear earns its keep.
Machines We Work On
If it runs on diesel, we can most likely tune it.