Swiss Drifter Mr Du Pasquier uses Garrett G35-900 on his RB powered Nissan S15

Lower Boost, More Power: Garrett G35-900 Delivers 910 HP in RB-Powered S15
Swiss drift driver Gregoire Du Pasquier, known online as @Swiss_Tuned, has spent the last two years transforming his Nissan S15 into a purpose-built professional drift machine. Competing in Drift Kings, Drift Cup and recently entering the French Drift Championship (CFD), the Swiss-built S15 was engineered around one clear objective: deliver maximum performance, consistency and reliability under the brutal demands of professional drifting.
At the center of that philosophy sits Garrett’s G35-900 turbocharger — a setup carefully selected with the support of Jerome at BJ Turbo, whose extensive experience in turbocharger sizing and motorsport applications helped guide the project toward the optimal balance of response, top-end airflow and long-term reliability for professional drift use.
The result is a lightweight 1250 kg competition chassis featuring a full fiberglass body, tubular crash structures, rear-mounted cooling system and a fully built RB-based engine package capable of producing 910 horsepower and 916 Nm of torque at only 1.6 bar of boost pressure.
More importantly, the G35-900 completely transformed the car’s behavior on track.

Purpose-Built Around Drifting
At the heart of the car sits an RB25-based engine stroked to 2.6 liters. The combination features CP 9:1 compression pistons, BC connecting rods, HKS 254°/264° camshafts, ID1300 injectors and FuelTech FT500 engine management running on E85 fuel.
Reliability was a major priority throughout the build process, especially given the sustained high-RPM load that drifting places on the RB platform. Platinum Racing Products (PRP) supplied several key RB components including the billet oil pump, while also providing technical support throughout the engine’s development to ensure the setup could survive the harsh conditions of professional drifting.
The cooling system reflects the same philosophy. A large rear-mounted radiator paired with a Davies Craig EWP150 electric water pump keeps both engine and turbo temperatures under control even during long drift sessions in extreme summer heat. Combined with the car’s lightweight fiberglass bodywork and rear cooling layout, the chassis maintains a balanced 52% front weight distribution.
The suspension package uses Wisefab front and rear geometry kits combined with BC Racing coilovers, while Premoza tires ensure that the 900 HP are efficiently transferred to the ground.

Why the G35-900?
The previous setup used a journal-bearing AGP 6262 turbocharger on a lower-compression 8.1:1 engine combination. Tuned to 1.8 bar of boost pressure, the setup produced 725 horsepower and performed well competitively.
However, Du Pasquier wanted more than simply additional power.
“The goal wasn’t just chasing bigger dyno numbers,” explains Du Pasquier. “We wanted a setup that would stay responsive, carry power harder at high RPM and remain reliable during long drift sessions.”
That’s where Garrett’s modern G-Series platform stood apart.
Working closely with Jerome at BJ Turbo, the team evaluated several possible turbocharger combinations before ultimately selecting Garrett’s dual ball bearing G35-900 paired with a 1.01 A/R turbine housing on a Walton Motorsport single-scroll exhaust manifold.
The decision was highly intentional.
The team also tested the smaller 0.83 A/R housing during development. While the smaller housing offered marginally earlier spool characteristics, the larger 1.01 housing delivered noticeably stronger high-RPM airflow while sacrificing very little response.
“In drifting, the engine spends most of its time at high RPM,” says Du Pasquier. “We preferred sacrificing a very small amount of spool in exchange for better top-end flow and reduced stress on the engine.”
That philosophy aligned perfectly with the strengths of Garrett’s modern G-Series platform.
Despite the larger turbine housing and the setup’s 900+ horsepower capability, the G35-900 still reaches full 1.6 bar boost pressure by approximately 4700 RPM while maintaining exceptionally strong airflow all the way to over 8000 RPM.
A major contributor to the setup’s responsiveness is the efficiency of the complete engine package surrounding the turbocharger. Rather than relying on oversized camshafts typically associated with high-horsepower RB builds, the engine uses relatively conservative HKS 254/264 cam profiles to preserve cylinder pressure and transient response. Combined with Walton Motorsport’s highly efficient exhaust manifold design and Garrett’s modern compressor and turbine aerodynamics, the result is an unusually broad and responsive powerband for the performance level.

Lower Boost, More Power
Final calibration was completed on a hub dyno by Swiss tuner Marc Stevanin, a respected name within the Swiss drift community. Stevanin also tuned the championship-winning 2JZ-powered car of fellow Swiss driver Severin Stockli, winner of the 2024 French Drift Championship Pro class.
The results demonstrated just how efficient the new Garrett setup had become:
● 910 HP and 916 Nm at 1.6 bar boost pressure
● 667 HP and 639 Nm at only 1 bar spring pressure
What makes the numbers especially significant is the comparison to the previous setup.

Despite running 0.2 bar less boost pressure than the old journal-bearing AGP turbo system, the Garrett G35-900 combination produced nearly 200 additional horsepower while dramatically improving high-RPM airflow, transient response and overall drivability.
The dyno curves clearly reflect the setup’s drift-focused character: strong progressive torque delivery combined with sustained horsepower that continues deep into the upper RPM range — exactly what’s required for maintaining good wheel speed.
“The biggest surprise with the G35-900 was how full the powerband feels,” says Du Pasquier. “It’s extremely responsive for the power level. With a small clutch kick the car instantly lights up the tires and delivers the full 900 horsepower almost instantaneously.”

Immediate Competition Success
The new setup made its competitive debut at the French Drift Championship in Vesoul on May 8th, 2026.
Entering the Pro class as a WildCard competitor, Du Pasquier immediately demonstrated the package’s competitiveness by qualifying 4th overall before finishing in the Top 8 — the strongest WildCard result of the season so far.
For a car making its first appearance with a completely new turbocharger and engine combination, the result validated the entire development philosophy behind the build.
Rather than simply creating a high-horsepower dyno car, the Garrett G35-900-equipped S15 proved itself exactly where it mattered most: on track, under pressure and at full commitment.

Looking Ahead
With the success of the Garrett G35-900 now proven on track, development is already moving toward the next chapter.
Du Pasquier is currently building a dedicated Mk4 Toyota Supra drift car powered by the legendary 2JZ engine platform — and expectations are high for what Garrett’s upcoming G38 turbo lineup will bring to the project.
With the stunning performance of the G35 series on the S15, this next build may raise the bar to a whole other level.