Welcome to the North American Subaru Impreza Owners Club Tuesday September 2, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Normally Aspirated with bolt-on Forced Induction Powertrain

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 06-27-2002, 05:20 AM   #1
HubbieScooby
Scooby Specialist
 
Member#: 7088
Join Date: May 2001
Location: Tropical Island
Vehicle:
01
Super Slow

Question can't stop running rich from RRFPR

hey guys i have this problem ever since i installed my turbo kit about 3 months ago....when i got my car back i was running super rich for the first week.....plus the installer forgot to pull out my stock plugs....i have a cartech RRFPR and was wondering if the top screw where you can tune with your thumb should be all the way in at all the time?? this controls how soon the FPR starts pumping fuel right?? the side screw where you need some kindda socket wrench is for how much fuel right?? i'm kindda wonder how you guys have your set up?? the problem is my idle temp is around 500-600F and my full tank of gas will probably give me about 225 miles maybe a little more....in think my O2 sensors are fried too from the first week running super rich....i have an air/fuel meter from autometer and it reads all the way to rich all the time while cruising.....when i hammer the gas the meter will slowly creep to about the first block of stoch....and sometimes cross over to lean.....this really sucks cause i'm running a 15.1 at the 1/4 mile and wondering if this time is caused be still running too rich....i am running 4.5 lbs. boost and have an super ITC retarding not more than 3 degrees at the most around the high RPM's and running 92 octane....can you guys tell me how you tuned you cartech RRFPR??? thanx much guys

hugh
* Registered users of the site do not see these ads.
HubbieScooby is offline   Reply With Quote
Old 06-27-2002, 07:16 AM   #2
SteveS
Scooby Specialist
 
Member#: 6
Join Date: Jun 1999
Location: South Jersey
Vehicle:
2007 BMW Z4 M Coupe
Interlagos Blue

Default

You have it backwards. The nut-locked allen screw in the center of the RRFPR is used to adjust the "baseline" fuel pressure. The recommended procedure is to disconnect the vacuum line from the RRFPR, letting it reference atmospheric pressure (i.e. neither vacuum or boost), and setting your fuel pressure to where you want to it be when you are transitioning from vacuum to boost. The thumb adjustable screw is used to adjust the rate that the pressure will rise when under boost. If it is screwed all the way in, you are definitely going to be running too much pressure, too much fuel, and possibly could damage the injectors.

No fuel pressure gauge? I'd recommend hooking one up at least temporarily so that you can get things straightened out.

Hope this wasn't a Subaru tuner shop that left you in this condition!

Steve
SteveS is offline   Reply With Quote
Old 06-27-2002, 03:44 PM   #3
HubbieScooby
Scooby Specialist
 
Member#: 7088
Join Date: May 2001
Location: Tropical Island
Vehicle:
01
Super Slow

Default

Quote:
Originally posted by SteveS
You have it backwards. The nut-locked allen screw in the center of the RRFPR is used to adjust the "baseline" fuel pressure. The recommended procedure is to disconnect the vacuum line from the RRFPR, letting it reference atmospheric pressure (i.e. neither vacuum or boost), and setting your fuel pressure to where you want to it be when you are transitioning from vacuum to boost. The thumb adjustable screw is used to adjust the rate that the pressure will rise when under boost. If it is screwed all the way in, you are definitely going to be running too much pressure, too much fuel, and possibly could damage the injectors.

No fuel pressure gauge? I'd recommend hooking one up at least temporarily so that you can get things straightened out.

Hope this wasn't a Subaru tuner shop that left you in this condition!

Steve
oh no!! i have the thumb screw almost all the way out ...if i screw it anymore out the nut will fall off...i better turn that thing in.....i have the socket center screw in about half way.....i guess i should loosen that out since i am running 4.5 lbs....thanx

hugh
HubbieScooby is offline   Reply With Quote
Old 06-27-2002, 07:39 PM   #4
Eric SS
Sooby Guru
 
Member#: 1914
Join Date: Jul 2000
Chapter/Region: SWIC
Location: 2013 335i, 2011 G37 coupe
Vehicle:
2000 2.5RS w/ EJ22T
swap and N20. gone. : (

Default

Quote:
Originally posted by HubbieScooby


oh no!! i have the thumb screw almost all the way out ...if i screw it anymore out the nut will fall off...i better turn that thing in.....i have the socket center screw in about half way.....i guess i should loosen that out since i am running 4.5 lbs....thanx

hugh
no, no, the Thumb screw should be almost all the way out if you are rich. I have both my thumb screw and top screw almost all the way out and am running 38psi at idle and up to 85psi (can;t get lower for some reason) at 7psi

Eric
Eric SS is offline   Reply With Quote
Old 06-28-2002, 03:05 AM   #5
HubbieScooby
Scooby Specialist
 
Member#: 7088
Join Date: May 2001
Location: Tropical Island
Vehicle:
01
Super Slow

Default

what really?? i'm getting two different stories here....Tom from Ludespeed said that when the screw is all the way in...it is running really rich....to lean it out is when you loosen it....can someone confirm this??

hugh
HubbieScooby is offline   Reply With Quote
Old 06-28-2002, 12:13 PM   #6
Eric SS
Sooby Guru
 
Member#: 1914
Join Date: Jul 2000
Chapter/Region: SWIC
Location: 2013 335i, 2011 G37 coupe
Vehicle:
2000 2.5RS w/ EJ22T
swap and N20. gone. : (

Default

Quote:
Originally posted by HubbieScooby
what really?? i'm getting two different stories here....Tom from Ludespeed said that when the screw is all the way in...it is running really rich....to lean it out is when you loosen it....can someone confirm this??

hugh
That's what I said... If the screw is in, it will run richer, if the screw is out, it will lean it out.

Eric
Eric SS is offline   Reply With Quote
Old 06-28-2002, 07:55 PM   #7
HubbieScooby
Scooby Specialist
 
Member#: 7088
Join Date: May 2001
Location: Tropical Island
Vehicle:
01
Super Slow

Default

kool i'll give another whack at it...thanx


hugh
HubbieScooby is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
ej207 v5 swapped from vf28 to vf34 not runs rich @ idle impreziv25 Subaru Conversions 6 05-24-2007 04:46 PM
Can't stop listening to this song from Amelie.. Christoff Off-Topic 12 01-13-2007 01:46 AM
Damage from running rich? Petrus General Community 16 04-16-2006 12:27 AM
high egt's from running rich? KitchenerWRX Newbies & FAQs 12 12-01-2005 02:35 AM
Got back from dealer, now running rich!! Javier Factory 2.0L Turbo Powertrain 1 06-17-2005 11:29 AM


All times are GMT -4. The time now is 11:24 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.