Air fuel ratio question
Thread Starter
Joined: Jan 2003
Posts: 2,601
Likes: 0
From: Dayton OH
Rep Power: 311 
Air fuel ratio question
question one
i just put a sf kit on my car im only running 4.5psi. my question is how do i know if the fmu is working properly. sometimes when i boost the air fuel ratio gauge shows full rich but sometimes it shows full lean. can some one please help i dont want to blow my motor.
question two
im working on a return system but all i really know is how to mod the fuel rail and how to change the fuel pump and run the return line. i read the fuel system faq. am i correct when i say all i need is modded fuel rail, pump, return line, and a boost referencing fpr.
i just put a sf kit on my car im only running 4.5psi. my question is how do i know if the fmu is working properly. sometimes when i boost the air fuel ratio gauge shows full rich but sometimes it shows full lean. can some one please help i dont want to blow my motor.
question two
im working on a return system but all i really know is how to mod the fuel rail and how to change the fuel pump and run the return line. i read the fuel system faq. am i correct when i say all i need is modded fuel rail, pump, return line, and a boost referencing fpr.
Thread Starter
Joined: Jan 2003
Posts: 2,601
Likes: 0
From: Dayton OH
Rep Power: 311 i know i need wide band but there isnt much to tune right now with the sf system. once i upgrade the fuel system in the near future i will get wide band
7thgen Power Maker
iTrader: (74)
Joined: Sep 2003
Posts: 9,048
Likes: 1
From: Buffalo, NY, US
Rep Power: 0 The SF fuel system is horrible. It is hardly considered a fuel system. Just another band aid, fuel enrichment that increases FP in the lines for no reason. So many people had problems with that set-up, and I don't know why people keep using it.
Thread Starter
Joined: Jan 2003
Posts: 2,601
Likes: 0
From: Dayton OH
Rep Power: 311 i got it with the rest of the kit as a whole i got a great deal on everything. thats why i have it like i said i know it is a terrible system thats why im getting rid of it. can someone please answer my question
7thgen Power Maker
iTrader: (74)
Joined: Sep 2003
Posts: 9,048
Likes: 1
From: Buffalo, NY, US
Rep Power: 0
Originally Posted by v8eaterokv6
i got it with the rest of the kit as a whole i got a great deal on everything. thats why i have it like i said i know it is a terrible system thats why im getting rid of it. can someone please answer my question
Joined: Nov 2003
Posts: 3,318
Likes: 0
From: Boise, Idaho
Rep Power: 327
Originally Posted by v8eaterokv6
question one
i just put a sf kit on my car im only running 4.5psi. my question is how do i know if the fmu is working properly. sometimes when i boost the air fuel ratio gauge shows full rich but sometimes it shows full lean. can some one please help i dont want to blow my motor.
question two
im working on a return system but all i really know is how to mod the fuel rail and how to change the fuel pump and run the return line. i read the fuel system faq. am i correct when i say all i need is modded fuel rail, pump, return line, and a boost referencing fpr.
i just put a sf kit on my car im only running 4.5psi. my question is how do i know if the fmu is working properly. sometimes when i boost the air fuel ratio gauge shows full rich but sometimes it shows full lean. can some one please help i dont want to blow my motor.
question two
im working on a return system but all i really know is how to mod the fuel rail and how to change the fuel pump and run the return line. i read the fuel system faq. am i correct when i say all i need is modded fuel rail, pump, return line, and a boost referencing fpr.
a nice add on would be a guage that screws into the FPR to show what pressure your running at. But yes what you have listed is basically what you'll need 
Thread Starter
Joined: Jan 2003
Posts: 2,601
Likes: 0
From: Dayton OH
Rep Power: 311 i have been looking at every auto parts store i see and none of them have hobbs or pressure switches do you have a link to one online
Thread
Thread Starter
Honda Civic Forum
Replies
Last Post
juror
Mechanical Problems/Vehicle Issues and Fix-it Forum
5
May 26, 2015 06:35 PM
superstanko
Mechanical Problems/Vehicle Issues and Fix-it Forum
3
Apr 28, 2015 04:38 AM
