Leeds, West Yorkshire · Est. tuning specialists
Unlock your car's
real performance.
Custom ECU remapping, DPF & AdBlue solutions, Ghost immobilisers and performance upgrades — developed properly, backed up and explained in plain English.
- 100%
- Custom maps
- Dealer
- Level diagnostics
- Backed
- Up & reversible
What we do
Services built around your car
From everyday economy maps to full performance builds and theft protection — whatever you drive, we've got you covered.
ECU Remapping
Custom, dyno-developed remaps that unlock real power, sharper throttle and better economy from your engine.
Learn moreDPF, EGR & AdBlue Solutions
Diagnosis, cleaning and repair of blocked DPFs, faulty EGR valves and AdBlue / emissions faults.
Learn moreVehicle Security — Ghost & Trackers
Autowatch Ghost immobilisers and insurance-approved trackers to protect your car from keyless theft.
Learn moreServicing & Maintenance
Manufacturer-schedule servicing, oil & filter changes and general maintenance using quality parts.
Learn morePerformance Upgrades
Hardware to match your remap — induction, exhausts, intercoolers, hybrid turbos and more.
Learn moreDiagnostics & Fault Finding
Dealer-level diagnostics to read, interpret and fix the faults a basic code reader can't.
Learn moreRecent builds
Real results, real cars
ECU Remapping+99 bhpBMW 340i (B58)
Stage 2 — Big Gains, Daily Driveable
Stage 2 custom map with downpipe. Transformed throttle response and a huge mid-range surge while keeping it smooth for daily use.
View build
ECU Remapping+31 bhpVW Golf GTD 2.0 TDI
Stage 1 Economy + Power Map
Stage 1 map balancing extra torque for towing and motorway pulling with a noticeable improvement in MPG.
View build
Vehicle SecurityAudi RS3 8V
Autowatch Ghost II Install
Discreet Ghost II immobiliser fitted to protect a high-value performance car against keyless theft.
View buildWhy Bozza Racing
Done properly, or not at all
No generic, off-the-shelf files. No guesswork. Every job is diagnosed, developed and tested so you get reliable results you can feel — and trust.
- Custom calibration tailored to your exact vehicle and goals
- Your original ECU file is always backed up and reversible
- Honest advice — we'll tell you what's worth doing and what isn't
- Clear, fixed quotes before any work begins
“Night and day difference. The car pulls so much cleaner and they talked me through every step.”
— Verified customer, Stage 1 remap
+30%
typical power gain*
1 day
most jobs turned around
*Gains vary by vehicle, fuel and specification.
Ready to get more from your car?
Send us your reg and what you're after — we'll come back with honest advice and a clear quote. No pressure.