St John's Garage is a BHP UK approved dealer. As a fully-approved dealer we have to carry the necessary insurance certificates to ensure customers have piece of mind.

There are more than 18,000 individual ECU remapping files available through BHP UK which means over 90% of all modern vehicles can be tuned by us. Whether it's improved power, torque, or fuel economy you want, it's highly likely that your car features on our vehicle tuning database.

Performance Remap

Power Tuning is essential for those drivers who feel their vehicle is a not living up to it's potential. By increasing the power of your vehicle you are providing yourself with one that is safer for overtaking, more pleasurable to drive and puts the smile back on your face — without the outlay for a new vehicle.


  • More Horsepower
  • Greater torque
  • Enhanced, sharper throttle response
  • Smoother, more progressive delivery of power

Economy Remap

An expertly optimised Economy Tune on your vehicle, will deliver the optimum economy for your car, and provide a delightful increase to the power delivery, at the same time.


  • Up to 20% improved fuel economy
  • Improved MPG, reduced emissions
    (subject to vehicle type)
  • Enhanced, sharper throttle response
  • Smoother, more progressive power delivery
  • Some power and torque improvements