Welcome to the North American Subaru Impreza Owners Club Friday March 29, 2024
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Technical > Engine Management & Tuning

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.







* As an Amazon Associate I earn from qualifying purchases. 
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 01-11-2005, 10:56 AM   #1
racerwrx
Scooby Newbie
 
Member#: 10054
Join Date: Sep 2001
Vehicle:
2002 WRX

Default Fuel soak, perrin rails + sti 550s + UTEC on EJ20

I had the infamous cold-weather fuel leak so I decided to bypass all the Subaru design issues and just put some Perrin rails on. While in there I threw some pink injectors in and a Perrin turbo inlet hose. With the car back together, it runs fine at low load, but once the UTEC takes over it goes ridiculously rich (ie., <9:1.) I have the stock injector size set to 420, and I've slowly moved the scaled injector value from 550, to 570, 600, and 620. It's still very rich at 620, so I'm starting to wonder if the Perrin rails are having an effect on the fueling.

This post ( http://www.wrxhackers.com/forums/sho...ht=perrin+rail ) has me concerned. AKWRX implies that the Perrin rails DO affect fuel pressure; However, I am running the stock FPR, filter, and pump.

I've attached a log below, but for the most part I'm just curious if others have found the Perrin rails to affect fueling, and if so, how much. Also curious how high people are going with the injector scaling on pink 550's.

Cheers!


Code:
 1998  -7.9 2.2  10  00    00   W/B  +34.7    7.5 ECU.   +0.0 250.00 2.0  14.58
 2038  -5.5 2.2  10  00    00   W/B  +35.0    8.7 ECU.   +0.0 250.00 2.0  14.00
 2083  -3.8 2.3  10  00    00   W/B  +35.3    8.6 ECU.   +0.0 250.00 2.0  14.00
 2147  -3.2 2.3  12  00    00   W/B  +35.2    9.1 ECU.   +0.0 250.00 2.1  13.68
 2182  -2.8 2.4  17  00    00   W/B  +35.5   10.5 ECU.   +0.0 250.00 2.2  13.65
 2229  -2.2 2.5  20  00    00   W/B  +35.9   10.9 ECU.   +0.0 250.00 2.3  13.81
 2295  -1.4 2.6  27  00    00   W/B  +34.8   13.3 ECU.   +0.0 250.00 2.4  14.15
 2384  -0.4 2.6  29  00    00   W/B  +33.4   10.9 ECU.   +0.0 250.00 2.4  14.42
 2460  +0.6 2.7  47  10    00   W/B  +30.8   15.2 ECU.   +1.0 285.00 2.5  14.00
 2540  +1.7 2.8  57  20    00   W/B  +28.9   16.1 ECU.   +0.0 307.50 2.6  13.81
 2675  +2.5 2.9  71  20    00   W/B  +27.4   17.3 ECU.   +0.1 352.50 2.6  13.62
 2763  +3.1 3.0  74  20    00   W/B  +25.3   20.2 ECU.   +0.2 360.00 2.7  13.25
 2829  +4.1 3.1  75  30    00   W/B  +22.0   22.0 +21.4  +1.1 362.50 2.8  12.92
 2962  +4.7 3.2  76  30    00   W/B  +19.8   24.8 +20.4  +1.4 365.00 3.0  12.37
 3089  +5.5 3.3  77  40    00   W/B  +18.3   28.1 +19.0  +1.4 367.50 3.0  11.76
 3180  +6.4 3.3  78  40    00   W/B  +17.0   31.5 +19.0  +1.3 370.00 3.1  11.18
 3287  +7.0 3.5  78  40    00   W/B  +16.1   34.1 +19.2  +1.1 370.00 3.1  10.56
 3411  +7.8 3.6  79  50    00   W/B  +15.0   38.4 +16.0  +1.8 372.50 3.2  10.04
 3516  +8.0 3.7  79  50    00   W/B  +13.9   42.4 +16.0  +1.6 372.50 3.3   9.55
 3667  +8.8 3.6  79  50    00   W/B  +13.5   46.0 +16.0  +1.5 372.50 3.4   8.99
 3787  +8.6 3.8  80  50    00   W/B  +13.9   45.8 +16.2  +1.4 375.00 3.4  < 9:1
 3894  +8.8 3.7  81  50    00   W/B  +14.9   46.4 +17.2  +1.2 377.50 3.4   9.05
 4035  +9.2 3.8  80  50    00   W/B  +15.8   49.4 +18.0  +0.9 375.00 3.4  < 9:1
 4135  +8.6 3.8  79  50    00   W/B  +15.8   50.2 +18.6  +0.9 372.50 3.4  < 9:1
 4171  +9.0 3.8  63  50    00   W/B  +15.9   51.2 +18.7  +0.9 332.50 3.5  < 9:1
 4334  +8.8 3.8  59  50    00   W/B  +15.4   53.8 +19.2  +0.9 322.50 3.5  < 9:1
 4474  +8.4 3.8  57  50    00   W/B  +15.4   55.0 +19.7  +1.0 317.50 3.5  < 9:1
 4559  +8.4 3.8  32  00    00   W/B  +17.9   41.2 ECU.   +0.0 250.00 3.3  < 9:1
 4559  +6.8 3.5  16  00    00   W/B  +24.8   34.4 ECU.   +0.0 250.00 2.9  < 9:1
 4604  +3.9 3.0   5  00    00   W/B  +37.9   22.6 ECU.   +0.0 250.00 2.5  < 9:1
 4420  -0.4 2.4   0  00    00   W/B  +41.7   12.4 ECU.   +0.0 250.00 2.1   9.34
 4535  -4.9 2.2   0  00    00   W/B  +11.2    8.4 ECU.   +0.0 250.00 2.2  10.21
 4450  -8.3 2.1   0  00    00   W/B  +10.9    5.8 ECU.   +0.0 250.00 2.0  11.71
* Registered users of the site do not see these ads.
racerwrx is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
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
FS: (NJ) sti radiator, ic spray, fuel pump, perrin inlet, sti airbox, stock sti parts x00 Engine/Power/Exhaust 43 12-09-2010 12:34 PM
FS: Lotsa Parts GT35R Turbo, Perrin Pulley, Perrin Fuel Rails, Prodrive Springs, UTEC rlavalle NWIC Private Classifieds 29 02-22-2010 05:48 PM
04+ STI Turboxs UTEC on Ebay No Reserve!! EdsWRX Engine/Power/Exhaust 1 12-19-2006 01:32 AM
WA: P&P VF39, Perrin Rails, STi pinks, Volks TypeR Private 'For Sale' Classifieds 23 10-22-2004 02:16 PM

All times are GMT -4. The time now is 06:32 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2024 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.

When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission
Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.