Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum - View Single Post - Injectors reachign 100% duty cycle on 10psi S14SR Blacktop

TTrx7Pete · 11-06-2009, 08:38 AM

Brief rundown of the car:
97 S14 with SR20DET S14 Blacktop T28 with VTC
FMIC, Walbro 255lph pump, stock injectors, full 3" exhaust, intake, PowerFC D-Jetro.

The fuel system, sans pump, is stock. I'm running 10 psi of boost and I'm constantly hitting 100% duty cycle in the upper 5.5-7k rpm range. So I don't floor it, or get into it anymore. Wondering why I am hitting 100% duty cycle as I've read on the forum over and over that 10 psi is safe boost with stock injectors.

Anything you guys think that may be set improperly? I plan on double checking the injector settings on the PFC. Anything else?

11-06-2009, 08:38 AM	#1
TTrx7Pete Zilvia Member Join Date: Apr 2008 Location: Florida Age: 43 Posts: 179 Trader Rating: (0)	Injectors reachign 100% duty cycle on 10psi S14SR Blacktop Brief rundown of the car: 97 S14 with SR20DET S14 Blacktop T28 with VTC FMIC, Walbro 255lph pump, stock injectors, full 3" exhaust, intake, PowerFC D-Jetro. The fuel system, sans pump, is stock. I'm running 10 psi of boost and I'm constantly hitting 100% duty cycle in the upper 5.5-7k rpm range. So I don't floor it, or get into it anymore. Wondering why I am hitting 100% duty cycle as I've read on the forum over and over that 10 psi is safe boost with stock injectors. Anything you guys think that may be set improperly? I plan on double checking the injector settings on the PFC. Anything else? __________________ 1993 AW Mazda RX-7 1997 Nissan Silvia