
Bespoke ECU calibration, motorsport preparation and full chassis development. Power that arrives with engineering integrity, reliability and full documentation.
Performance work is where craftsmanship matters most. A poor map will destroy an engine in weeks. A poor brake upgrade will get someone killed. We do neither — every modification is engineered, dyno-validated and warranty-considerate.
From stage 1 mapping to forged-internal builds, from Cup-spec brake systems to motorsport-grade roll cages, every project carries a LONS Fleet Management Ltd build report and is documented through LiveTrack™ from first photograph to final dyno chart.
Bespoke ECU calibration on dyno
Stage 1, 2 and forged-internal engine builds
Performance brake and suspension packages
Exhaust system design and fabrication
Cooling system upgrades for track use
Motorsport preparation and FIA roll cages
Full build documentation and dyno graphs
Pre-mapping mechanical inspection
Collection and a courtesy vehicle available across Bristol on request — your day, uninterrupted.
Marque-experienced engineers, continually re-certified.
OEM diagnostic and calibration tooling on every bench.
Itemised quotations approved before any work begins.
Servicing that preserves your manufacturer warranty.
Every customer receives a private LiveTrack™ link with live updates, technician photos, walk-around videos, digital reports, online estimate approvals and end-to-end progress tracking — from check-in to handover.



MOT Class 4 & 7 testing on-site
Public liability & motor trade cover
Service book stamps preserve your warranty
Most appointments are completed the same working day at our Barton Hill workshop. Larger jobs are scheduled around your preference, with collection and a courtesy vehicle available on request.
Yes. All work is performed to manufacturer specification using OEM or equivalent quality parts, fully documented and stamped — preserving your warranty under EU Block Exemption legislation.
Every booking includes LiveTrack™ as standard. You receive a private link to view photographs, videos, technician notes and approve estimates from any device.
We collect across Bristol and the surrounding BS postcodes and return your vehicle on completion. Account holders also receive priority scheduling.
Yes. Your digital service record is updated on completion and synchronised with the manufacturer's online portal where supported.
Castle Combe, Pembrey, the Welsh B-roads — we build cars to enjoy them on the routes Bristol drivers actually use.
Unit 1A, Barton Hill Trading Estate · Bristol · BS5 9RD
Book online in under two minutes, call our workshop directly, or email — whichever suits you best.