Holden · JG-JH · 2009–2014
Measured on our Mascot dyno. Engine figures shown.
| Metric | Original | Tuned | Gain | % |
|---|---|---|---|---|
| Power (kW) | 110 | 136 | +26 | +24% |
| Power (HP) | 148 | 183 | +35 | +24% |
| Torque (Nm) | 320 | 381 | +61 | +19% |
Three reasons we tune diesels — and why a custom dyno-developed map is different from a flash-and-go file.
Facts
Modern diesels — including the Holden Cruze — leave the factory with a calibration that has to suit dozens of fuel grades, climates, tow ratings and emissions regulations across global markets. There is real headroom left in the engine, the turbo and the injectors. A custom remap unlocks that headroom safely, on your fuel, on your roads, for your driving style.
Safety
Peak horsepower looks great on a brochure, but it's mid-range torque that gets you past a road-train on a single-lane highway, or up the Blue Mountains with a caravan on the back. Our tunes target the rev range you actually drive in — so the Holden Cruze pulls cleanly and confidently when it counts, with AC load and altitude factored in.
Environment
A properly developed remap improves combustion efficiency at part-throttle — exactly where most diesels live on long highway runs. The result on the Holden Cruze is measurable: less diesel burned per 100 km, less CO₂ out the exhaust, and a smaller fuel bill at the end of the month. The numbers further down this page are based on 40,000 km of mixed driving at current Sydney pump prices.
Estimated savings over 40,000 km of mixed driving after the remap.
If your Holden Cruze is throwing limp-mode codes, regen failures, or AdBlue countdowns, we offer three targeted services. The right answer for a road-registered car is almost always cleaning, repair or a remap-with-DPF — but for off-road, motorsport and export vehicles we also do full electronic deletes.
A blocked or failing diesel particulate filter on the Holden Cruze usually shows up as the orange DPF light, repeated regen cycles, loss of power, black smoke or limp mode. Most of the time the cause is a sequence of short trips that never gave the regen a chance to complete — soot builds up faster than it gets burned off.
EGR carbon build-up is one of the most common faults on the Holden Cruze. Symptoms include rough idle, hesitation off the line, knocking under load, persistent check-engine lights, and EGR-cooler leaks that can dump coolant into the intake. We diagnose, clean, replace or — for off-road vehicles — fully delete the EGR system on the ECU.
AdBlue countdowns and SCR limp-mode events are increasingly common as Euro 5 and Euro 6 Holden Cruzes age out of warranty. Dealers typically quote ~$5,000 to replace failed components. We can repair the underlying fault — NOx sensors, dosing pump, urea heater, quality sensor — at a fraction of that cost, often same-day.
Experience
Colorado, Rodeo, Trailblazer and Captiva diesels still come through every week. The Duramax 2.8 and the older 3.0 CRD are both well-known platforms in our workshop.
Diesel tuning is not the same as petrol tuning. To safely access the ECU on a modern Holden Cruze you need the right bench tools, OBD interfaces and software for that specific calibration — there is no universal flasher that handles every car. We carry five separate tuning suites in the workshop, which between them cover roughly 90% of the diesels sold in Australia. The other 10% we open via bench, and we always back up the original file before any change is made.
Workshop
Choosing a tuner for your Holden Cruze is about more than just the file. The shop the work is done in matters. Our workshop in Mascot is a full-service automotive facility — diagnostics, mechanical, electrical, dyno, four-wheel alignment — under one roof, in partnership with Hi-Tech Auto Electrical & Mechanical.
Software & tools
Five separate ECU tuning suites in the workshop, plus bench-level access for the locked-down ECUs (later BMW, Mercedes, Land Rover and Volvo platforms). We always back up your factory file before any change.
Climate-controlled dyno room
Wind- and climate-controlled cell with motorsport-grade dyno. Every Holden Cruze that comes in for a remap gets a before / after dyno run and a road-test. EGT, AFR and boost are monitored throughout.
Common-rail experience
More than a decade developing custom maps for Common-Rail diesels — Bosch, Denso, Delphi and Continental ECUs. Our team includes carefully selected international calibrators with hands-on bench experience.
Why this matters for your Holden: a good remap is only half the job. The other half is being able to diagnose first — to know whether what you have is a tuning opportunity or an underlying mechanical or electrical problem. A blocked DPF, a failing turbo actuator, a tired injector or a stretched timing chain will all masquerade as "needs a tune." We rule that out before we touch the ECU.
On the dyno we typically see +26 kW (+24%) and +61 Nm (+19%) on a stock Holden Cruze 2L. Gains are measured at the engine using factory ECU logging.
Yes — over 40,000 km we estimate 544 L of diesel saved (about $979 at current Sydney pump prices) and roughly 1,458 kg less CO₂.
Yes. We back up your factory ECU file before any changes and can restore it any time — for trade-in, dealer service, warranty work or resale.
Most Holden Cruze remaps are completed in a single day at our Mascot workshop, including dyno before/after runs and a road test.
An ECU remap can affect manufacturer warranty on related driveline components. We back up the factory file so we can restore the original calibration before any dealer visit, and we always discuss the implications openly before booking.
★★★★★Got my Ranger PX2 tuned here. Massive difference in throttle response and pulls way harder up hills with the caravan. Workshop is spotless and the lads explain everything.
★★★★★Booked online, dropped the car off in the morning, picked it up after work. Honest quote, no upsell, and the difference in my Q5 is night and day on the freeway.
★★★★★Drove down from the Central Coast for these guys and worth every km. Smoother, stronger, and using less fuel on my run home. Highly recommend.
More cars we tune
Most cars finished in a single day at our Mascot workshop. Five minutes from Sydney Airport.