01505 683388 |

In addition to everyday servicing and repair needs, GSR offer a variety of upgrade packages and tuning options for all high performance cars.

OBD Re-mapping

performance cars scotland

Having tried and tested various OBD tuning tools over the years, we have come to find that the COBB Accessport ticks all our boxes. Quality, reliability and most importantly these tuning tools offer GUARANTEED safety for our customer vehicles.

Currently COBB tuning is available for the following manufacturers:

  • Subaru
  • Mitsubishi
  • Volkswagen
  • Porsche
  • Nissan
  • Ford
  • Mazda
  • BMW

Unlike other generic OBD re-maps which are flashed to the ECU memory, COBB can be safely installed and removed from your vehicle at any time using the Accessport handset.

Accessport offers a number of tuning stages, for example:

  • Stage 1: accessport Only
  • Stage 2: accessport & performance air filter and exhaust
  • Stage 3: Stage 2 & upgraded turbo kit and fuel injectors
  • Stage 4: Stage 3 kit & complete custom re-map using COBB handset built to customer specification

To view the full range from COBB visit www.cobbtuning.com.

To discuss your requirements call one of our Technicians who can explain all options available for your vehicle and provide a no obligation quotation.

Custom Re-mapping

At present GSR specialise in custom remaps for Mitsubishi Evo 1-9 and Subaru version 1-10 using Standard ECUs or with a supplied Link ECU.

As Dealers for Link Engine Management we can also supply and re-map for any of the Link Plugin ECU range:

  • Audi
  • Toyota
  • BMW
  • Mazda
  • Honda
  • Nissan

In addition to this, Link also offer a WireIn ECU range which can be fitted to ANY vehicle. Please visit www.linkecu.com.

A before and after Dyno sheet can be added to any Re-map.

We can tune other ECU brands, please call or mail for further info and pricing.


performance cars scotland

Engine Rebuilds

From a freshen up of gaskets/rings/shell bearings to a complete custom rebuild (and everything in between) GSR are specialists in Subaru and Mitsubishi re-builds. If you are looking to achieve a specific power level or just to repair damage we can advise and quote on a number of options to suit you.

Transmission Upgrades

We can source, supply and rebuild any gearbox, differentials or axles for most manufacturers. Our preferred brands are Drenth, Quaife, Samsonas, Extreme Clutch and Exedy but other brands can be supplied to suit customer preference or budget.

Bespoke Fabrication

Our team of Fabricators specialise in bespoke manifolds, exhausts and intercoolers as well as a full range of one off pieces for project builds. View our Gallery for some of their more recent work.


Performance Brake Kits

As agents for AP Racing, Alcon, DBA brakes and Performance Friction from a simple brake pad upgrade to a full tailor brake conversion we can advise supply and fit for any car.

Track Geometry Set-up and Corner Weighting

To get the best from your car on the road or track we can check and adjust the alignment of your chassis and measure and correct corner weights, which will result in improved braking, corner speed and traction.

Our Track Set-up can take 4-5hours to perfect, prices start from 200 +VAT.

performance cars scotland