This VW Campervan Is Making Up To 950BHP… And It’s Still Running In

Every now and then a project comes along that completely changes the way people think about a vehicle.

For the team at Colebrook CSC Transporters, that project became the RS T6.

Led by Director Rob and built entirely in-house by the Colebrook CSC Transporters team, this Volkswagen Transporter T6 has evolved from a simple idea into one of the most ambitious Transporter builds ever undertaken. The goal was never simply to build a show van or create something for social media attention. The vision was far greater.

The challenge was simple.

Could a Volkswagen Transporter remain a genuine campervan while delivering the kind of performance normally associated with high-end supercars?

The answer now sits in our workshop.

At first glance, it looks like a Transporter. Look a little closer and you begin to realise this is something very different.

At the heart of the build sits the legendary Audi RS3 2.5-litre five-cylinder TFSI engine. Known worldwide for its unmistakable soundtrack and incredible tuning potential, the engine was chosen as the perfect starting point for a project that would push the boundaries of what a Transporter could become.

However, simply fitting an RS3 engine was never enough.

The engine was completely stripped and rebuilt using JE forged pistons, Bartek H-beam conrods, ACL bearings, a fully ported and polished cylinder head, uprated Supertech valve train, Schrick 260 performance camshafts and ARP fasteners throughout. Every component was selected to withstand extreme power levels while maintaining reliability.

To feed the engine, the team installed a Pulsar G35-1050 full-frame turbocharger mounted to a custom fabricated exhaust manifold complete with a 50mm external wastegate. Running over 35 PSI of boost pressure, this is a setup designed for serious performance.

Fuel delivery is equally impressive.

Running on readily available 99-octane pump fuel, the RS T6 combines five 1000cc port injectors, five next-generation Bosch Motorsport direct injectors and five direct-port 630cc methanol injectors. Unlike conventional water-methanol systems, this setup runs on 100% methanol with absolutely no water content, providing exceptional cooling and fuelling capability under high boost conditions.

The intake system was heavily modified to support the additional injectors and airflow demands. An extensively reworked OE intake manifold features an O-ringed plenum secured with ARP hardware, swirl flap deletes and port-matched runners. Supporting components include a Forge elbow, Forge large-capacity dump valve and a Forge T6 TDI front-mounted intercooler helping keep intake temperatures under control even during extreme use.

Controlling the entire package is a Syvecs S7 Plus standalone ECU.

The advanced engine management system provides complete control over the vehicle’s operation and forms the backbone of the project. To unlock the full potential of the build, Colebrook CSC Transporters partnered with Four Stroke Performance in Belgium, one of Europe’s leading VAG performance specialists.

Working alongside the Colebrook team, Four Stroke Performance developed the bespoke calibration strategy that allows the RS T6 to deliver huge power while maintaining the drivability and responsiveness required of a road-going vehicle. Their expertise has played a vital role in transforming this ambitious project into a reality.

Putting this level of power to the ground required a completely unique drivetrain solution.

The RS T6 combines Volkswagen Transporter and Audi RS3 technology into a custom four-wheel-drive system unlike anything available from the factory. At its heart is a one-off DQ500 gearbox featuring a commercial DSG casing, RS3 gear cluster, TDI differential, RS3 valve block and 8P TCU with bespoke software calibration from Turners Tuning.

To cope with the demands of the build, the transmission incorporates an RTMG 1400Nm race clutch pack complete with billet basket and cover. The transfer box features a welded crown wheel while the gearbox itself has been raised 40mm from its original position and mounted using a solid gearbox mount for increased strength and improved geometry.

Keeping everything cool is a carefully engineered cooling package featuring the factory T6 radiator and fan assembly supported by dedicated engine oil and DSG oil coolers.

The fabrication work continues underneath the vehicle.

To achieve the stance and drivability required, the chassis underwent extensive modification. Max Load air management controls Solow front struts, rear air bags and GAS rear dampers. Powerflex bushes have been fitted throughout the steering and suspension systems while both front and rear chassis sections have been modified to provide driveshaft clearance when fully aired out.

A 40mm subframe raise, modified propshaft mounting arrangement and numerous custom fabrication details ensure the drivetrain geometry remains correct despite the dramatic ride height adjustment.

With power levels approaching four figures, braking performance was always going to be critical.

At the front, massive 405mm floating discs work alongside EBC pads and six-pot calipers. At the rear, a custom 360mm disc conversion combines Volkswagen parking brake functionality with Porsche Cayenne four-pot service calipers. HEL Performance braided brake lines complete the package.

The result is stopping power worthy of the performance available.

The van sits on 20-inch Supermetal Charger wheels wrapped in 255/35/20 Pirelli tyres, creating a stance that perfectly reflects the engineering hidden beneath the bodywork.

Yet perhaps the most remarkable part of the entire project is what happens when you open the sliding door.

Because despite everything underneath, this remains a genuine campervan.

Inside you’ll find a lightweight camper conversion featuring U-shaped seating, a bed system, fully equipped kitchen and a Reimo pop-top roof complete with lightweight sleeping platform. The off-grid electrical system includes a Victron MultiPlus inverter, twin lithium batteries and 200 watts of solar charging capability, allowing the van to remain self-sufficient wherever the adventure leads.

It is still designed to travel.

It is still designed to camp.

It is still designed to be enjoyed.

The current road tune is estimated to produce between 850 and 950 horsepower while the engine continues its running-in process. Future plans are already in place with the aim of exceeding the 1,000 horsepower mark.

From the fully forged Audi RS3 engine to the bespoke drivetrain, specialist calibration, custom fabrication and fully functional camper interior, every element of this project reflects the dedication, skill and passion of the Colebrook CSC Transporters team.

This isn’t simply another Transporter build.

This isn’t simply another campervan conversion.

This is the Colebrook CSC Transporters RS T6.

A one-of-a-kind Volkswagen Transporter built to demonstrate what is possible when engineering ambition is allowed to operate without limits.