IPD 987.2 Cayman/Boxster S 3.4L 74mm Plenum ('09-'12) (87474-3.4) 1537 Subaru also includes banjo bolt

Subaru also includes banjo bolt filters from the factory that can get gummed up with sediment and cause oil starvation

These systems are designed to be used with an engine management system that can add nitrous enrichment through the engine's fuel system

and hardware

E46 2006 BMW 330i E46

"I'm not sure what I'm more impressed with

IPD 987.2 Cayman/Boxster S 3.4L 74mm Plenum ('09-'12) (87474-3.4) 1537 Subaru also includes banjo boltWorks with Factory 74mm Throttle Body Porsche's introduction of their DFI (Direct Fuel Injection) intake was a totally and completely redesigned intake system developed to deliver improved performance, fuel consumption and emissions by optimizing the air fuel mixture directly inside the combustion chamber. The DFI Porsche engine package is a finely tuned performance machine and additional power has proved difficult to find. The unique design of