Welcome to the 2GNT Forum!
Home Site Background Info & Specs Mods & Tech Info CAPS Part Reviews Donate 2GNT Stickers
Search Printer-friendly copy 1 User in Chat
Top 2GNT Technical Performance/Engine topic #93785
View in linear mode

Subject: "In/Out Pressure" Previous topic | Next topic
RebelRiderR6Oct-12-05 05:21 AM
Member since Oct 21st 2003
61 posts, 		Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#93785, "In/Out Pressure"


          

I just went and had my car dynoed and my ecu kept fighting the changes in the fuel. At idle it would run lean and when they adjusted the fuel pressure it would go up but the the computer would cut it off. We did many runs and they decided to change the in/out pressure on my Apexi S-AFC2 to 5 and it was orginally set at 7. This seemed to work and didn't have the lean or rich code thrown at us. At WOT the Pressure reads +.10

Why would my ECU be fighting the changes and should we keep the settings at 5 in/out? Any suggestions would help.

Info:
Just had engine rebuilt and installed an AEM Fuel Regulator in replacement to the cartech unit. I am also using the missing link and have 360cc injectors.



http://www.dsmtuners.com/gallery/browseimages.php?do=member&imageuser=24657

  
Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

Replies to this topic
RE: In/Out Pressure, Moderatorcs82685, Oct-12-05 05:32 AM, #1
RE: In/Out Pressure, cougar694u, Oct-12-05 05:34 AM, #2
RE: In/Out Pressure, RebelRiderR6, Oct-12-05 05:35 AM, #3
      RE: In/Out Pressure, CrazyEclipse, Oct-12-05 07:05 AM, #4
RE: In/Out Pressure, cougar694u, Oct-12-05 05:33 AM, #5
RE: In/Out Pressure, RebelRiderR6, Oct-13-05 11:51 AM, #6
      RE: In/Out Pressure, cougar694u, Oct-13-05 12:37 PM, #7

Moderatorcs82685Oct-12-05 05:32 AM
Donating 2GNT member
2007 posts, 		Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#93786, "RE: In/Out Pressure"
In response to Reply # 0



          

this is really no help, but what are the dyno results?


I contributed to the Wiki!
EVO IX - just a really expensive boost gauge and a K&N air filter
96 Eclipse RS -awaiting registration and inspection
95 Eclipse GS - parts car
Mods/Profile - http://www.2gnt.com/index.php?d=cs82685

  
Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

    
cougar694uOct-12-05 05:34 AM
Donating 2GNT member
3381 posts, 		Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#93788, "RE: In/Out Pressure"
In response to Reply # 1



          

Originally posted by cs82685
this is really no help, but what are the dyno results?


click the link in his sig, may not be from this pull in reference, but you can get an idea.

~Luke
Facebook
1969 Cougar - 11.91 - 380HP
2007 GSXR 750
1999 OZ - SOLD - 15.26 NA - 14.71 on 75 shot

  
Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

    
RebelRiderR6Oct-12-05 05:35 AM
Member since Oct 21st 2003
61 posts, 		Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#93790, "RE: In/Out Pressure"
In response to Reply # 1

          

I am at 262 whp and 248 tq at 15 pounds boost with my clutch slipping. When we replace my clutch they said I should be somewhere between 290-300whp.



http://www.dsmtuners.com/gallery/browseimages.php?do=member&imageuser=24657

  
Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

        
CrazyEclipseOct-12-05 07:05 AM
Member since Jul 30th 2002
2503 posts, 		Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#93795, "RE: In/Out Pressure"
In response to Reply # 3

          

The SAFC is a piggy back unit. It will do that. Asll it does is trick the ECU, but the ECU compensates when it gets pissed off. Every car is different with the in/out setting. Personally, mine is set at 9/8. Runs perfect at that setting.


1998 GS-Turbo KANDY -- For Sale
1999 GS-Non Turbo 10th anniversary Edition

I have been in bed with Dino.....ask me for a picture!

  
Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

cougar694uOct-12-05 05:33 AM
Donating 2GNT member
3381 posts, 		Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#93787, "RE: In/Out Pressure"
In response to Reply # 0



          

I remember playing with mine so that with the engine not running the afc displayed as close to zero vacuum as I could get it. I think I went 5/5 also, but I don't recall. I also remember having the re-adjust several times because the ECU would try to correct it.

~Luke
Facebook
1969 Cougar - 11.91 - 380HP
2007 GSXR 750
1999 OZ - SOLD - 15.26 NA - 14.71 on 75 shot

  
Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

    
RebelRiderR6Oct-13-05 11:51 AM
Member since Oct 21st 2003
61 posts, 		Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#93833, "RE: In/Out Pressure"
In response to Reply # 5

          

What happens if it see positive pressure?
I am watching it and sometimes at WOT it may be at +.24 but mostly it stays at +.1. And When I am driving without throttle it is at able -700



http://www.dsmtuners.com/gallery/browseimages.php?do=member&imageuser=24657

  
Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

        
cougar694uOct-13-05 12:37 PM
Donating 2GNT member
3381 posts, 		Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#93839, "RE: In/Out Pressure"
In response to Reply # 6



          

Originally posted by RebelRiderR6
What happens if it see positive pressure?

Typically, the ecu will cut fuel if it see's boost. It thinks something's wrong because there's not supposed to be pressure in the intake manifold.

~Luke
Facebook
1969 Cougar - 11.91 - 380HP
2007 GSXR 750
1999 OZ - SOLD - 15.26 NA - 14.71 on 75 shot

  
Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

Top 2GNT Technical Performance/Engine topic #93785 Previous topic | Next topic
   

Powered by DCForum+ Version 2.2
Copyright 1997-2005 DCScripts.com, Copyright 2005-2026 2gnt.com
Generated in 0.066 seconds, executing 28 queries.