Custom Exhausts, ECU Remapping & DPF Cleaning in Cardiff
Bespoke stainless steel exhausts, ECU remapping and DPF cleaning from the experienced team at DKU Performance Cardiff.
Get a Free Quote
Our Services in Cardiff
Custom exhausts, ECU remapping and DPF cleaning, all carried out by our experienced technicians.

Custom Exhaust Systems
Using only the highest quality T304 stainless steel, we design and build bespoke exhaust systems tailored to your vehicle and your goals. Our stainless tubes range from 1" to 5" and all fabrication is done on-site, from performance upgrades to full end-to-end custom systems.
- Bespoke stainless steel exhausts, built to your specification
- T304 mandrel bends for tight angles and a distinctive look
- Custom wastegate pipes, flanges and screamer pipes
- Enhanced sound and appearance, while staying street legal

ECU Remapping
The Engine Control Unit manages fuel delivery, ignition timing and throttle response. Manufacturers limit these settings to suit global regulations and fuel standards. We reprogram your ECU through the OBD port to unlock the engine’s full potential, with every remap tested and backed by a performance report.
- Increased horsepower and torque
- Improved throttle response and safer overtaking
- Improved fuel economy
- Tailored to your make, model and driving style

DPF & Hydrocarbon Cleaning
A blocked Diesel Particulate Filter reduces performance, raises emissions and can lead to costly repairs. We remove the DPF, clean it thoroughly and refit it, and we also offer manual regeneration with hydrocarbon cleaning to restore performance.
- Restores performance and fuel efficiency
- Keeps your vehicle MOT compliant
- Signs to watch for: DPF warning light, loss of power, poor economy, frequent regenerations
- Regeneration, deep cleaning and replacement available
Why Choose DKU Performance
Years of Experience
Years of expertise crafting bespoke exhausts and tuning vehicles for enthusiasts.
In-House Fabrication
All exhaust fabrication is done on-site, so we control quality from start to finish.
Advanced Equipment
Professional tools and dyno testing verify every improvement.
Customer Service
A personalised approach and honest advice from enquiry to collection.
Our Work








What Our Customers Say
Frequently Asked Questions
What is ECU remapping?
ECU remapping reprograms your engine’s control software to improve power, torque, throttle response and often fuel economy, tailored to your vehicle.
How do I know if my DPF needs cleaning?
Common signs are a DPF warning light, loss of power, poor fuel economy and frequent regeneration cycles. Once the warning light appears the filter is already heavily blocked, so it is best to act early.
Are your custom exhausts street legal?
Yes. We build performance exhausts with the look and sound you want while keeping them street legal.
What material do you use for exhausts?
We use T304 stainless steel, with tubes from 1" to 5", fabricated on-site.
How do I get a quote?
Call us, message us on WhatsApp or fill in the enquiry form below and we will get back to you.
Visit Our Cardiff Branch
- Address
- DKU Performance, Unit 5, Rhymney River Bridge Rd, Cardiff, CF23 9AF
- Phone
- 0121 502 4844
- Opening hours
- Monday - Saturday 9am - 5pm, Sundays by appointment only
- enquiries@dkuperformance.co.uk