These Malpassi / FSE fuel pressure regulators are designed for use in EFI vehicles, both factory standard and modified. With this particular model, fuel pressure increases at the rate of 1:1 with manifold pressure (or boost) – same as your factory regulator. This means you will get the same fuel delivery curve as factory fuel pressure regulator, however base pressure is adjustable which it is not with factory regs. No re-tuning or re-chipping should be required.

Kinugawa Japan TD05HR-20g EVO4-9 - BALL BEARING + BILLET
Kinugawa 3 bolt triangle (trust / greddy / mitsubishi) TD06 gasket set
Short shifter - Toyota Altezza
GFB D-boost V2 VNT boost controller
Clutch kit Subaru WRX/STI GDA\GDB HDCB
GFB EX38 EX40 EX50 wastegate clamp
Turbosmart Eboost street EBC
Hybrid electronic boost controller type EBC-R
GFB FX-S FPR 8050 