VW’s Golf GTI is the seminal hot hatch; it was the original and remains the class standard. Despite its outstanding range of dynamic talents owners (baited by rivals with more power) will always desire more. Well, RG motorsport can now offer Golf GTI owners that unquantifiable ‘more’ in the guise of an aftermarket power upgrade package.Operating from its Randburg workshop, RG Motorsport’s stage one GTI upgrade adds 63mm diameter stainless steel exhaust plumbing (minus the catalytic converter), a less restrictive air filtration system and impeccably programmed Unichip Q engine control parameter mapping. Retaining the Golf6 GTI’s series production turbine, RG says its stage one conversion is good for 188kW and retails for R13 550.If you seek true Golf R-rivalling performance, well, RG Motorsport can oblige, having built a customer car based on its stage one conversion running an upgraded KKK K04 turbo. Keeping things cool are an enlarged intercooler unit and some trick internals minimise mechanical drag.6.58 ON HIGHVELDOn the RG motorsport’s dynamometer this modified forced induction regime ups power to 242kW, supported by a 405Nm groundswell of torque. Without the benefit of all-wheel drive, RG Motorsport adds a carbon-metallic clutch and Quaife limited-slip differential to aid traction and to this end the car runs a 0-100km/h time of 6.58 seconds at Pretoria altitude before recording a true top speed of 267.3km/h. It stands to reason that, with the benefit of DSG shifting, it would be even quicker...RG Motorsport prepared the Golf 5 GTI racers that won Class T of the local Production Car series for the last two years, providing invaluable real-world endurance testing for the company’s road car turbo conversions - under the most severe conditions imaginable.The full-house big turbo conversion adds R29 600 on top of the stage one kit, with the Quaife slippy diff another R18 400. Good value for a (more powerful) Golf R alternative properly configured to run at Reef altitudes.