Ship us you Existing oil pump for Stage 2 upgrade. Upgrade includes pump intake and delivery ports bore, high pressure spring replacement and high capacity oil filter. Free return shipping.Laser guided boar cutting with well finished internal diameter walls. Pump flow and pressure up 30% at any RPM.
Note: Your oil pump must be a good undamaged core. Do not try to open it on your own. Let us properly take it apart and do upgrades in shop. Please note that if your pump gears are stock we only recommend engine RPM to not exceed 8800rpm or 380HP. DO NOT Under any circumstances us solid light weight crank pulleys with any applications. We only recommend stock or fluid dampened pulleys.
Seriously could not be happier with my STI !!! Great work and Nolving is without a doubt the best Subaru mechanic in town.