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4mm at best
SR20DET S13
100lb seat pressure at 33
resulting in unwanted backpressure and unmanageable fuel pressure
NOTE: This fuel rail does NOT come standard with fittings (see plumbing kit below)
Radium Top Feed Upgrade Fuel Rails w/Top FPD Port - Subaru WRX/STI/Forester vband 4mm at bestNote: Fuel Pulse Dampener (FPD) Not Included Manufactured with a large internal bore, the fuel rails can support all necessary engine power requirements. They are CNC machined from solid 6061 aluminum, black anodized, and laser etched for a high quality surface finish. These fuel rails are designed specifically for OEM or equivalent fitment injectors. For injector height flexibility and thermal insulation, 2 sets of machined phenolic spacers are
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