Engine Management eCtune , Crome , AFC , FMU , Zdyne , Hondata , EMS , TE , Uberdata Anything to control your fuel, spark needs!

check valves and FMU's?

Old 09-10-2007, 06:56 PM
  #1  
0.5 BAR
Thread Starter
 
Join Date: Sep 2007
Posts: 142
Default check valves and FMU's?

i know the purpose behind a FMU, but what do check valves/ missing kinks accomplish? i hear everyone using them who are using FMU's, but i need someone to explain the concept....i've looked here and haven't found any info yet as to there function... :1
Nismo-san is offline  
Old 09-10-2007, 07:02 PM
  #2  
0.0 BAR
 
Join Date: Mar 2003
Posts: 0
Default Re: check valves and FMU's?

they bleed off boost so the map sensor doesn't see it and throw a CEL
J-MAN is offline  
Old 09-10-2007, 07:26 PM
  #3  
0.5 BAR
Thread Starter
 
Join Date: Sep 2007
Posts: 142
Default Re: check valves and FMU's?

ah....that makes sense...thanks dude
Nismo-san is offline  
Old 09-10-2007, 07:55 PM
  #4  
1.5 BAR
 
Join Date: May 2007
Posts: 749
Default Re: check valves and FMU's?

I didn't think they bled off boost, I thought that when the boost reaches a certain level, they close a valve. Do they really vent boost to atmosphere?
klyph is offline  
Old 09-10-2007, 08:31 PM
  #5  
3.0 BAR
 
Join Date: Apr 2005
Posts: 6,036
Default Re: check valves and FMU's?

Originally Posted by klyph
I didn't think they bled off boost, I thought that when the boost reaches a certain level, they close a valve. Do they really vent boost to atmosphere?
no they let boost out, they open a valve in boost that bleeds off the pressure
ososlohatch is offline  
Old 09-10-2007, 10:29 PM
  #6  
1.0 BAR
 
Join Date: May 2007
Posts: 230
Default Re: check valves and FMU's?

Originally Posted by Nismo-san
i know the purpose behind a FMU, but what do check valves/ missing kinks accomplish? i hear everyone using them who are using FMU's, but i need someone to explain the concept....i've looked here and haven't found any info yet as to there function... :1
Check valves work pretty decent, bleeding off positive pressure so the MAP sensor doesn't read it; therefore, keeping the ECU happy. I'm only using two on my setup right now, and haven't thrown a CEL.
Skaterdudz02 is offline  
Old 09-11-2007, 12:05 AM
  #7  
0.5 BAR
 
Join Date: Aug 2007
Posts: 178
Default Re: check valves and FMU's?

I thought a one way check valve would hold the map at max vacuum?
fuse is offline  
Old 09-12-2007, 12:34 AM
  #8  
0.0 BAR
 
Join Date: Dec 2002
Posts: 0
Default Re: check valves and FMU's?

check valves are hot



fmu is gangster



broken ringlands are tiiiite
Guy-Fast is offline  
Old 09-13-2007, 04:07 PM
  #9  
0.0 BAR
 
Join Date: Feb 2006
Posts: 0
Default Re: check valves and FMU's?

Just use one big one

assh0l3 is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
NINJA del Sol
Forced Induction
12
02-18-2007 09:19 AM
rallyway
Engine Management
5
04-22-2006 08:55 AM
itstock
Turbo Parts For Sale
14
11-16-2003 02:30 PM
Anton
Engine Management
6
04-17-2003 01:07 AM
brax90si
Forced Induction
7
02-07-2003 06:42 PM


Thread Tools
Search this Thread
Quick Reply: check valves and FMU's?


Contact Us - Sitemap - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.