Without first-hand experience from behind the wheel it is hard for someone to really understand the subjective differences between the latest GT3 3.8 and its RS counterpart. Apart from its on-paper superiority and quantifiably superior lap times, the RS really is a significantly more rewarding car to drive on both road and track.
However, we are all different and there are track-day junkies and racers for whom even the RS is not quite enough. This is where 9ff’s G-Track concept comes in.
As 9ff boss Jan Fatthauer explained, Our objective was to take a new or existing GT3 and turn it into a GT3 RS beater without exceeding the RS price tag. The idea is to prepare street legal GT series Porsches to deliver optimum performance on the racetrack, while still retaining enough comfort to drive to and from the circuit.
This yellow car, based on a ’10 GT3, is the first of the not-too-extreme and not-too-expensive G-Track 480 models that turns the 997 GT3 into an RS beater for less than the difference in price between these two factory models. As you can guess from its name, it has 480 hp, a good 45-hp increase over stock, and 30 hp more than the mighty RS.
There are no internal engine modifications, so everything done here is reversible. Starting with the intake system, the airbox receives a BMC free-flow air filter; while at the other end of the motor 9ff uses its own bespoke exhaust system in conjunction with the factory catalytic converters.
Dispensing with the two smaller side boxes, this highly efficient 57-pound stainless steel exhaust uses just a large rear silencer box.
The heavy, dual-mass flywheel is ditched in favor of a single-mass unit, and after the ECU remap, the engine dyno numbers showed 480 hp at 7800 rpm with 345 lb-ft of torque at 6180 rpm. This compares favorably with the 450 hp at 7600 rpm and 317 lb-ft at 6750 rpm of the RS.
A feature adopted from the current factory RSR racers is the rear bumper vents that help to draw heat from the engine bay and reduce the air pressure buildup inside the rear wings.
The dynamic engine mounts that are optional on the GT3 are a great idea, but they are heavy, 9ff boss Jan Fatthauer explained. This car had those mounts, and we replaced them with solid mounts for both the engine and gearbox, saving 6 kilograms in the process. These are our own mounts. We can’t use the Carrera Cup ones because the engine brackets are different.
Another one of our customers races in the VLN long-distance events, and uses a GT3 RS as his road car, Jan continued. He tested this car on track and says it is even faster than his GT3 RS, so we are very pleased that we have achieved what we set out to do.
The chassis of the RS benefits tremendously from the wider front track, so we increase the front track by an inch on either side and cover the wider wheels and tires with new, wider arches, said Jan. The wider front wheel arch flares are integrated with the front wings and have a different look from the RS’s add-on flares. Our customers certainly like the beefier look.
Downforce over the front axle is increased with a Carrera Cup front spoiler lip, while at the rear, the reproduction ’11 Cup car engine lid has an RSR-style wing on alloy struts. The wing’s side plates are our own design and sit further back than the RS ones to reduce air spillage, Jan explained.
As low weight is one of the linchpins of any high-performance car, and especially a track-day car, Jan was very keen to show me that a substantial amount of weight had been taken out of the GT3.
After he had shown me the suspension modifications and exhaust system with the car on a four-post lift, Jan wheeled out his corner weight system and lowered the car onto the scales.