Pros
- Avoids a blocked or failing filter on affected petrol engines
- Relevant for off-road, motorsport and export builds
OPF/GPF Off
OPF / GPF off — the petrol side of the same story.
The petrol particulate filter is the gasoline twin of a DPF: same upside, same legal reality. Here it is, straight.
What it is
The Otto/Gasoline Particulate Filter traps soot from direct-injection petrol engines. An OPF/GPF-off calibration removes that filter from the control strategy.
Cons
- Removes a legally required emissions component on road cars
- Increases particulate emissions
- Will fail emissions testing where the OPF/GPF is mandated
Is it worth it?
On a road car where the filter is mandated it is not a legal option; the proper path is repair or replacement. As a delete, it is for off-road, motorsport and export use.
Legality & compliance
The OPF/GPF is a mandatory emissions component on affected petrol road cars. Removal is restricted or illegal for road use in most countries and will fail emissions testing. Intended for off-road, motorsport or export vehicles only. Check local law.
Questions, answered.
Which cars have an OPF/GPF?
Many newer direct-injection petrol cars (broadly Euro 6c and later) carry a petrol particulate filter.
Other solutions