Thread: Air intake restriction, manifold vacuum, fuel flow
View Single Post
Old 03-11-2015, 11:20 PM   #9 (permalink)
California98Civic
Cyborg ECU
 
California98Civic's Avatar
 
Join Date: Mar 2011
Location: Coastal Southern California
Posts: 6,299

Black and Green - '98 Honda Civic DX Coupe
Team Honda
90 day: 66.42 mpg (US)

Black and Red - '00 Nashbar Custom built eBike
90 day: 3671.43 mpg (US)
Thanks: 2,373
Thanked 2,174 Times in 1,470 Posts
Quote:
Originally Posted by jakobnev View Post
The FPR uses manifold pressure as its reference.
Yes, and I have wondered about that. The vacuum line from the FPR to the intake manifold indexes pressure to the vacuum? That would keep effective fuel pressure in the injector rail within a narrower range than without the vacuum line, no?
__________________
See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.
  Reply With Quote