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 Porsche 911 991 Turbo S
(3.8 BiTurbo, 412 kW / 560 hp)
The 3.8 L flat-six in the 991 Turbo S delivers 560 hp from twin variable-turbine-geometry turbochargers — one of the highest specific outputs in the Porsche lineup before the switch to the 3.7 L 992. The rear-engine architecture means short intake paths but high intake air temperatures right at the intake valves under full load. In the tuning scene, 991 Turbo S builds with Stage 1 software reach 650+ hp without issue; hardware-supported setups (intercoolers, downpipes, larger turbos) push 700–800 hp into realistic range. Water injection is the established path to EGT control in this league.
Recommended configuration for the 991 Turbo S: We recommend the Stage 3 DI variant. Porsche DI engines require the DI-specific Boost Cooler controller with fuel-rail pressure mapping and Hyper-Sonic nozzle setup — fast pressure ramp-up is decisive for correct injection mass at the rapid load transitions of the VTG turbo setup. Stage 2.5 Power-Max is the leaner alternative for moderate software stages up to ~650 hp.
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, significantly higher thermal reserve under sprint loads — decisive on an AWD sports car repeatedly delivering full launch power from standstill.
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.
