ECU Shop Products

New Zealand's best Throttle Controllers, Tunable Piggyback ECUs & EGR Delete Cables.

4.9/5ECU Shop on Google Reviews
NZ Warranty2-year local warranty
Authorised DealerListed ECU-SHOP dealer, Silverdale
Shipped From NZDirect to your door
Please note: not all ECU Shop items are stocked by Coast 4x4. Items we don't hold on the shelf are available for direct shipping from within New Zealand.

Why Choose ECU-SHOP?

One of the world's largest manufacturers of diesel aftermarket tunable ECUs, with over a decade of experience engineering performance for real-world conditions.

Best Tunable ECU Solutions

Ultra Boost tunable piggyback ECUs offer 4 switchable maps, mobile app control, and up to 40% more torque. Designed for NZ conditions and fitted and tuned in our Silverdale workshop – Coast 4x4 is an authorised and listed ECU-SHOP dealer.

NZ's Best Throttle Response Controllers

The Boost Speed Next delivers 14 steps of throttle response, featuring anti-theft mode, winch mode, and anti-slip control. Simple 10-minute DIY installation with models for most vehicles.

Ultra Boost tunable piggyback ECUUltra Boost app live dashboard

Tunable Piggyback ECUs

Ultra Boost Piggyback ECUs

Tunable diesel piggyback ECUs, up to 40% more torque without modifying your factory ECU. Tuned for NZ conditions, professionally fitted.

  • 4 switchable maps, including an adaptive map that learns your throttle habits within safe limits
  • Mobile App allows advanced users to adjust Injector Duration within safe limits
  • Mobile App control & Dash-Mounted Controller
  • In-line plug-and-play, factory ECU data is untouched
  • Professionally fitted & tuned

$1,895 inc. GST, installation and tuning

Ultra Boost optimises the signals between your engine's sensors and the factory computer, lifting boost and fuelling within safe limits. Nothing in the factory ECU is remapped or overwritten, so the unit is fully reversible. Four switchable maps cover towing, daily driving, economy and full power. As an authorised and listed ECU-SHOP dealer, we match every unit to your engine and tune it on fitting in our Silverdale workshop, backed by a 2-year NZ warranty.

Available units by vehicle

ECU-SHOP EGR delete cables, vehicle-specific plug-in harnesses

EGR Delete Cables

EGR Delete Cables

Plug-in EGR Off cable for a cleaner intake tract, quieter engine, sharper response, dramatically reduced carbon buildup and no permanent modification.

  • Plug-and-play install, no cutting or splicing
  • Vehicle-specific harness, no guessing

$195 NZD inc. GST

Pick the cable that matches your vehicle. Each cable is engineered for one specific make & engine.

ECU-SHOP Monster Gauge, multi-function OBDII gauge

Gauges

Monster Gauge

Multi-function OBDII gauge: monitor every parameter your engine can talk to.

  • Live engine data: temp, boost, RPM, AFR (air-fuel ratio) & more
  • Read & clear DTCs (diagnostic trouble codes)
  • 0–100 km/h timer + performance logging

$395 NZD inc. GST

Plugs into your OBDII port and reads live data straight from your engine's computer. No sensors to fit, no wiring to run. Works with petrol and diesel vehicles that have an OBDII port, which covers most NZ vehicles from the early 2000s onwards.

View Monster Gauge
Boost Speed Next throttle controller and app

Throttle Response Controllers

Boost Speed Next

14 steps of throttle response from Mild to Wild, with Ramble Idle, Winch, Anti-Slip and Anti-Theft modes. Control it from the mobile app or the included dash-mounted controller. 10-minute DIY install.

$395 NZD inc. GST

Find My Vehicle

About ECU-SHOP

ECU-SHOP started in Chiang Mai, Thailand in the early 2000s, when founder Ponpoj "Ar" Wannapinyo began building his own piggyback ECUs. Today the company designs and manufactures tunable diesel ECUs, throttle response controllers and EGR delete cables in an ISO-accredited factory with over 130 full-time staff, and works directly with Ford and Toyota in Thailand, where almost all of the utes sold new in New Zealand are built.

Not Sure What Suits Your Vehicle?

Tell us your make, model and year and we'll confirm the right unit. As an authorised and listed ECU-SHOP dealer, we supply and fit the full range in our Silverdale workshop.

Not all ECU Shop items are stocked by Coast 4x4 – items we don't hold are available for direct shipping from within New Zealand.

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