Which Boost Cooler system fits my vehicle?
| Scope of delivery |
Stage 1 Starter Kit |
Stage 2 Low Boost |
Stage 2.5 PowerMax |
Stage 3 DI |
|---|---|---|---|---|
| High Pressure Diaphragm Pump, 300 PSI | ✓ | ✓ | ✓ | ✓ |
| 2 Nozzles | ✓ | ✓ | ✓ | ✓ |
| Upgradable | ✓ | ✓ | ✓ | ✓ |
| 3l Tank | ✓ | ✓ | ✓ | ✓ |
| Low level indicator | ✓ | ✓ | ✓ | ✓ |
| Variable Injection | x | Boost press | Boost press | ✓ |
| 2-D Injection | x | x | x | Boost press + FRP |
| Dual Stage Technology | x | x | Upgradable | ✓ |
| Cockpit display | x | x | ✓ | ✓ |
| 52 mm DIN cockpit display | x | x | ✓ | x |
| ProLine stainless steel braided line available | x | ✓ | ✓ | ✓ |
Water Injection for the Audi RS6 Avant C7 Performance
(4.0 TFSI V8, 445 kW / 605 hp)
The 4.0 L V8 bi-turbo in the RS6 C7 Performance is built in a hot-V layout — both turbos sit inside the engine valley, directly on the manifolds. This delivers compact packaging and extremely fast turbo response, but also very high intake air temperatures under full load. In the tuning scene the RS6 C7 is among the most rewarding candidates in the Audi lineup: Stage 1 software tunes deliver 720+ hp, hardware-supported builds (intercoolers, downpipes, larger turbos) reach 800–900 hp without exception. Exactly in this load range water injection provides the thermal headroom needed to convert theoretical headroom into real power at the wheels.
Recommended configuration for the RS6 C7 Performance: We recommend the Stage 3 DI variant. The 4.0 TFSI is a pure direct-injection V8; the DI-specific Boost Cooler controller with fuel-rail pressure mapping and Hyper-Sonic nozzle setup is mandatory. Stage 2.5 Power-Max is the leaner option for software tunes up to ~700 hp. Stage 1 is only sufficient for OEM software without further tuning.
Effect in numbers: −40 to −60 °C intake air temperature under full load, +10 to +25 % power gain depending on stage, reduced knock-control retard in the high-load zone, significantly higher thermal reserve under repeated full-load events — decisive on a hot-V V8 with its dense packaging.
Boost Cooler Water Injection
– made for your vehicle
Performance water-methanol injection with the classic Snow Performance Boost Cooler systems. Reduces intake air temperature by up to −60 °C, enables +10 to +25 % more power without thermal engine stress. Direct from the manufacturer — European Headquarters for Snow Performance.
Direct manufacturer support
from Hamburg
S-Performance GmbH is the European Headquarters for Snow Performance. English-speaking support available, pre-sales technical advice, warranty, shipping to over 220 countries.
Got questions about your vehicle or one of the systems? Get in touch with our support team: contact form.
Boost Cooler vs. Boost Cooler ProLine
Standard Boost Cooler kits ship with red pressure hoses and push-on fittings. The ProLine variant uses stainless steel braided lines and AN fittings - motorsport-grade pressure resistance, higher heat tolerance.
