View Single Post
beepbeep beepbeep is offline
Registered User
beepbeep's Avatar
Join Date: Jun 2001
Location: Sweden
Posts: 5,565
I advise against raising system pressure. Most EFI Bosch injectors are rated for 3 bar fuel pressure and it's there they have optimal spray pattern.

Also, fuel volume DOES NOT increase linearly with fuel pressure. If you double fuel pressure your flow rate raises with 41%. Add boost on the top on it and it's obvious why fiddling with FPR is not worth considering. Thus, your pump would need to supply fuel at 7 bar (!) pressure in order to provide 41% more fuel than stock (on turbocharged engine boosting 1 bar).

Keep the stock 3-bar FPR and change injectors so you have approx 80% duty cycle on highest load.
Thank you for your time,

Last edited by beepbeep; 10-17-2009 at 06:06 PM..
Old 10-17-2009, 06:18 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #9 (permalink)