The process
Three steps on a single page — no jumping around. Start when you're ready.
Choose your map
Stage 1, Stage 2, Stage 3 or Eco-Map — select the calibration that fits your vehicle.
Enter your details
Vehicle registration, make, model, address and contact info.
Review & transmit
Confirm your spec and send it straight to the tuner via WhatsApp or email.
Check your gains
Enter your registration, or your make, model and year — we'll estimate your gains across Stage 1, Stage 2, Stage 3 and Eco-Map.
BETA TESTING
Who we are
BRS Tuning is a fully mobile ECU calibration service based in the Warwickshire area. We don't run a fixed workshop and we don't sell generic files — every calibration is a prebuilt map tailored specifically to your vehicle, its hardware and your fuel grade. We come to your home or workplace across Warwickshire and fit the tune on the spot, so the result is sharper throttle response, more usable power and a car that feels genuinely different the moment you pull away.
Prebuilt, tested maps
Every calibration is a proven, pre-developed map — dyno-tested and road-validated before it ever reaches your car. We don't write files on the fly; we fit a map that's already proven on your exact engine and hardware.
Safety-first margins
Every prebuilt file is developed with conservative boost, fuel and timing margins built in — so it delivers performance without pushing your engine past safe limits. Tested for reliability, not just peak figures.
Full bolt-on support
From stock hardware to upgraded intakes, downpipes and intercoolers — we map around your modifications to extract their full potential.
Before & after data
You leave with a documented before/after comparison and a clear picture of what changed, so you know exactly what you paid for.
What drivers say
"Booked on the Monday, they were at my house by Wednesday morning. Fitted the Stage 1 map in under an hour — picked up 45hp and 60Nm on stock hardware. Throttle response is night and day. Genuinely prompt, no messing about."
"Came to my workplace with full bolt-ons already fitted. The prebuilt Stage 2 map took it from 374 to around 470hp — smooth, safe and exactly the figures they quoted. Done on my lunch break. Couldn't be happier with the service."
"Wanted better MPG for the daily commute, not more power. The eco map smoothed out the low-end and I'm genuinely seeing a few extra MPG. Turned up exactly when they said they would, friendly and professional throughout."
"Booked through the WhatsApp flow on a Sunday, mapped in my own driveway by Tuesday. Gained a solid 60hp over stock and the car pulls so much cleaner. The before/after printout says it all — honest advice, no upsell pressure, bang on time."
"From the first WhatsApp message to the finished map, top notch. They explained exactly what the Stage 1 would do and delivered every bit of it. Car feels like a different animal now."
"Proper professional setup. Turned up on time, mapped it on my drive, and the before/after figures were exactly what they promised. No pushy sales talk, just honest work."
"Best decision I've made for the car. The throttle response alone is worth it, and the extra pull up the rev range is addictive. Whole process took less than an hour."
"Built the engine properly and went Stage 3 with a hybrid turbo. The map is smooth, safe and genuinely scary in the best way. These lads know their stuff inside out."
Frequently asked
Straight answers on the mobile remapping process, file safety and what to expect on the day.