Diesel performance tuning

Modern diesel ECU’s require precise tuning to ensure that fuel mixtures are right to prevent excessive heat. All Harman Motors’ diesel performance tunes have been developed to work with the factory components and be safe for both general use and heavy towing loads. This attention to detail ensures safe EGT’s (exhaust gas temperatures), and that boost levels do not exceed the efficiency level of the factory turbo.

We can re-code diesel ECUs to be much better for short trips and around-town driving.

Harman Motors can supply and fit ECU SHOP - Ultra Boost Tunable ECU, EGR and DPF “solutions”.

Throttle controllers

We have plug ‘n play controllers that will improve throttle response without needing a full tune.

Ford Ranger PX2 / PX3 Turbo upgrade package

We are able to offer Torque Performance’s 210+kW Turbo upgrade package for the Ford Ranger PX2 & PX3 models. This is an upgraded turbo developed here in NZ, and includes an upgraded Garrett intercooler. We have exhaust options available too.

Performance exhaust upgrades

Looking for a better flowing exhaust or something that’s a bit louder? We have exhaust options available for a range of diesel utes and vans.

Let’s talk diesel performance tuning

Your diesel can perform and sound better, and be more practical for short trips around town because the DPF isn’t clogging up. The first step is to talk to us and let us know what you’d like to achieve with a diesel vehicle.