ECU remapping, also known as chip tuning, is the process of modifying the software that controls the engine of a vehicle. This is done by adjusting the settings of the Engine Control Unit (ECU) to optimize performance, improve fuel efficiency, and increase power output. The remapping process involves accessing the ECU’s software and modifying the parameters that control the engine’s operation, such as ignition timing, fuel injection, and turbo boost. This can be done either by physically modifying the ECU or by using specialized software to modify its settings through a diagnostic port. ECU remapping can provide significant improvements in vehicle performance and fuel efficiency, but it should only be performed by trained professionals using appropriate equipment and techniques.

ECU remapping can enable or facilitate the removal of certain emissions control devices, such as the EGR (Exhaust Gas Recirculation) valve, DPF (Diesel Particulate Filter), and catalytic converter. Here’s a bit more detail on each:

 EGR delete: This involves disabling the EGR system, which recirculates some exhaust gases back into the engine to reduce emissions. By removing the EGR valve and programming the ECU accordingly, the engine can operate without recirculating exhaust gases, which can potentially improve performance and fuel efficiency.

DPF delete: A DPF is a filter that captures particulate matter in the exhaust of diesel engines. However, it can become clogged over time, reducing engine performance and potentially causing other issues. DPF deletion involves physically removing the filter and reprogramming the ECU to disable any error codes that may be triggered as a result.

Cat delete: A catalytic converter is an emissions control device that converts harmful pollutants in exhaust gases into less harmful emissions. However, it can also restrict exhaust flow and reduce engine performance. Removing the catalytic converter and reprogramming the ECU can potentially improve performance, but it is illegal in most countries and can result in higher emissions.

.We are specialists in performance and economy tuning on mainstream cars. We are able to provide all stages of tuning from economy tuning right up to Stage 3 full custom conversions.


We are specialists in performance and economy tuning on mainstream light commercial vans. With Vans running engine variants lifted straight from main stream cars, the tuning potential on these is the same as for cars. We are able to offer the full range of services including mapping for towing.

We are specialists in performance and economy tuning on mainstream 4×4’s. We are able to offer the full range of services which includes economy tuning, mapping for towing.