As with any filter, they ‘filter out’ or trap particles. In the case of the DPF it is the harmful diesel exhaust soot particles. This means they have to be emptied regularly to maintain performance. The DPF needs to be cleaned regularly and this is done through a process called regeneration. This can be done by either active, passive or forced regeneration. Basically the accumulated soot is burnt off at high temperature (around 600°c) leaving only a residue of ash. This is effectively renewing or regenerating the filter, ready to take on more pollution from the engine.

Why does my Diesel Particulate Filter (DPF) block

Every vehicle type and engine combination can have differing reasons as to why the filter blocks. The rate of particulates generated by the engine, the quality of the fuel, quality of the oil, driving style, even the location of the DPF in the exhaust system can all contribute to the filter blocking or not regenerating fully.

Generally, the problems arise in around town stop/ start driving where the regeneration process might not complete. A warning light will appear or a message indicating the DPF is full displays on the dash. Continuing to drive in the same manner and the soot build up will increase until other warning lights illuminate and the vehicle will go into ‘limp’ mode, where driving speed is restricted.

And this is what had happened to the Vauxhall Insignia. No longer would the DPF regenerate even after a forced regenerate at all. As a result of this the car had gone that badly into limp mode that it had to be recovered to the workshop.

DPF Solution from ADE Tuning

With the DPF removed from the exhaust system it was clear to see how badly this filter was. It was absolutely caked in soot and this was the reason that the car had to gone in to limp mode. With the DPF no longer an issue the ecu of the Vauxhall Insignia was reprogrammed with our DPF solution software.

The car was rebuilt back up and an full oil and filter service performed. It is important to change the oil and the oil filter as a blocked DPF filter can cause diesel to end up in the oil.

It now drives like it should all thanks to ADE Tuning DPF Solution 🙂

Are you having issues with your DPF?

Get in touch with us to discuss a DPF Solution


VW Golf with a hybrid turbo

vw golf, hybrid turbo remap, ade tuning

In for a custom remap this week at Volkswagen Golf GT Sport TDi (MK5). We had spoken to the owner of the car a few weeks previously after he called us after being recommended by a previous customer. He was in the process of fitting a hybrid turbo to his car and wanted to know about our custom remaps. Wanting to get more power and better performance from his Golf we mentioned removing the dpf and blanking off the egr valve. A week later the owner of the Golf had fitted his hybrid turbo, removed his dpf and blanked off his egr valve and was ready to book in for the dpf software, egr software and custom remap to suit the hybrid turbo.

The Golf arrived on the back of a low loader as it isn’t ideal to drive round with the dpf removed and no software as it the car will still regenerate sending excess fuel into the engine causing many, many different problems. Before we even began to think about the custom remap we had to reprogram the car’s ecu with the software for the dpf delete and egr valve blank to make the car safe.

Hybrid turbo remap time

With the car strapped to the rolling road we did a few runs as a health check. As a standard Golf we would be expecting to see around 170bhp with 258ft/lb torque. The custom remap began and very soon we could see an increase in power. With the car on the dyno we are able to see the power curve etc. making adjustments where needed. With custom remap written it as time to test the car on the road.

vw golf, hybrid turbo, custom remap, ade tuning

Although the hybrid turbo would have been strong enough for 250bhp we where asked not take the custom remap that far due to the customer not wanting a lot of smoke.