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SERVICE GUIDE / 03

Know what each system does.

These options concern emissions equipment, fault reporting or ECU security. This guide explains the names on the enquiry form; every request is reviewed manually.

Explore the options
12 OPTIONS EXPLAINEDVEHICLE-SPECIFIC REVIEW

THE OPTIONS / 03

Emissions & ECU systems.

Prices shown are published UK examples or guide ranges. Add-on examples assume a separate tune; software-only prices exclude hardware, diagnosis and repairs. We’ll check your vehicle and confirm a quote before booking work.

Public-road requirements matter.

Selecting an option does not mean we can provide it. A vehicle used on public roads must meet its applicable requirements; we will decline work that would make it unlawful.

Read GOV.UK DPF guidance
01 / 12MANUAL REVIEW

Adblue / SCR Removal

SCR systems use AdBlue to reduce nitrogen oxide emissions; this option concerns a removal request.

Software-only guide £249–£399
What we check: The fault, repair alternatives and legal suitability.
Add to my enquiry
02 / 12MANUAL REVIEW

CVN Fix

A CVN is a calibration verification value reported by some ECUs; this concerns a reported mismatch or file issue.

Published add-on example £130
What we check: ECU history, original file and the actual fault.
Add to my enquiry
03 / 12MANUAL REVIEW

Decat O2 Delete

Concerns removal of a catalytic converter and changes to associated oxygen-sensor reporting.

Software-only examples £150–£220
What we check: Exhaust hardware, fault diagnosis and road-use requirements.
Add to my enquiry
04 / 12MANUAL REVIEW

DPF Delete

A diesel particulate filter traps soot from the exhaust; this option concerns a deletion request.

Software-only guide £250–£400
What we check: The filter fault, cleaning or repair routes and legal suitability.
Add to my enquiry
05 / 12MANUAL REVIEW

EGR Delete

Exhaust gas recirculation routes some exhaust back into the engine to help control emissions.

Software-only guide £199–£250
What we check: EGR condition, diagnostic codes, repair routes and intended use.
Add to my enquiry
06 / 12MANUAL REVIEW

Emission Patches

A broad request about software affecting an emissions-control system.

Price after vehicle review
What we check: Which system is involved, why it is being requested and legal suitability.
Add to my enquiry
07 / 12MANUAL REVIEW

GPF / OPF Disable

A petrol particulate filter, also called an OPF, controls exhaust particles.

Software-only guide £150–£400
What we check: The hardware, fault diagnosis and applicable road-use requirements.
Add to my enquiry
08 / 12MANUAL REVIEW

Immo Delete

An immobiliser is an anti-theft starting system; this option concerns a security-related ECU request.

Published examples £75–£205
What we check: Proof of ownership, the actual fault and a secure repair route.
Add to my enquiry
09 / 12MANUAL REVIEW

P Codes (DTC) Delete

Diagnostic trouble codes show faults detected by the vehicle. Suppressing a code can hide a problem.

Add-on examples Free–£50
What we check: The underlying fault and a suitable repair before considering software.
Add to my enquiry
10 / 12MANUAL REVIEW

Lambda / O2 Removal

Oxygen or lambda sensors report exhaust conditions to the ECU for fuel and emissions control.

Add-on examples Free–£50
What we check: Sensor and exhaust faults, repair options and road-use requirements.
Add to my enquiry
11 / 12MANUAL REVIEW

MAF Removal

A mass-air-flow sensor measures incoming air used by the engine-management system.

Add-on examples Free–£50
What we check: Sensor condition, intake setup, diagnostics and legal suitability.
Add to my enquiry
12 / 12MANUAL REVIEW

Swirl Flap Removal

Swirl flaps alter airflow in some intake systems; this concerns a removal request.

Add-on examples Free–£50
What we check: Intake faults, repair options and emissions suitability.
Add to my enquiry
KEEP EXPLORING

Calibration & drivability

From performance and economy remaps to gearbox and sensor calibration, these enquiries start with the vehicle’s current setup and the outcome you want.

View guide