how much fuel do i add for every pound of boost

Thread Tools
 
Search this Thread
 
Old Jul 1, 2009 | 09:17 PM
  #1  
lsturboej1's Avatar
Thread Starter
Junior Member
 
Joined: Jun 2009
Posts: 17
Likes: 0
Default how much fuel do i add for every pound of boost

i was just wondering how much fuel i need to add for every pound of boost i add to my car
Reply
Old Jul 1, 2009 | 09:28 PM
  #2  
tony1's Avatar
Honda-Tech Member
 
Joined: May 2002
Posts: 15,814
Likes: 8
From: Dallas, TX, USA
Default Re: how much fuel do i add for every pound of boost

If you double the amount of air going into the motor, you need to double the amount of fuel going in to maintain the same a/f ratio.
Reply
Old Jul 2, 2009 | 05:59 AM
  #3  
blaze the chemi's Avatar
Honda-Tech Member
 
Joined: Oct 2004
Posts: 2,088
Likes: 0
From: All over ATL
Default Re: how much fuel do i add for every pound of boost

if only the air temp is constant....
<<< chemitry and physics geek
Reply
Old Jul 2, 2009 | 06:08 AM
  #4  
tony1's Avatar
Honda-Tech Member
 
Joined: May 2002
Posts: 15,814
Likes: 8
From: Dallas, TX, USA
Default Re: how much fuel do i add for every pound of boost

And if backpressure is at a constant ratio to manifold pressure.

That's why we have MAP comps, Air temp comps, EMAP comps, etc.
Reply
Old Jul 2, 2009 | 07:07 AM
  #5  
shifty35's Avatar
Honda-Tech Member
 
Joined: Oct 2004
Posts: 870
Likes: 1
From: Nashville, TN
Default Re: how much fuel do i add for every pound of boost

Consult the magic 8-ball... I mean, magic wideband O2 sensor...
Reply
Old Jul 2, 2009 | 12:59 PM
  #6  
boost4life's Avatar
Honda-Tech Member
 
Joined: Jul 2006
Posts: 408
Likes: 0
From: charlotte, nc, usa
Default Re: how much fuel do i add for every pound of boost

every psi jus double the fuel
Reply
Old Jul 2, 2009 | 01:09 PM
  #7  
PrecisionH23a's Avatar
Honda-Tech Member
 
Joined: Mar 2002
Posts: 14,296
Likes: 1
From: Charleston, SC
Default Re: how much fuel do i add for every pound of boost

Tony told me to add like four for every pound.
Reply
Old Jul 3, 2009 | 07:03 AM
  #8  
soccerlover7's Avatar
New User
 
Joined: Jul 2009
Posts: 8
Likes: 0
Default Re: how much fuel do i add for every pound of boost

I recently purchased a 1994 Honda Civic LX. When I originally bought the vehilce, the previous owner was running a stock exhaust system with no catalytic converter. I wasnt concerned because I had intentions on replacing the whole exhaust system anyways. I bought headers, a resignator, hi flow cat and a muffler. I took these parts to the muffler shop and im pretty sure they put 3" piping in between. At the time I didnt even know that they had different pipe sizes and that it made a difference. Now i'm not exactly sure if my exhaust system is the problem but my car is extremely low on power. I can barely get up hills. In fact I cant gain any speed up hills all my spedometer does is drop along with my rpms..even when I switch into a lower gear I still cant get up them. And its not only big hills its any slope thats not level and i mean ANY. Its ridiculous because if im at a stoplight and i try to accelerate normally my car will just run backwards until i get up into the 4000 rpm range and then it will slowly make its way up but only when I ride the clutch! Please someone help me. Could this be because of my exhaust system or is there another underlying problem. And what are my options in fixing the issue.

Thanks in advance.
Reply
Old Jul 3, 2009 | 07:39 AM
  #9  
DOHC_16v's Avatar
Honda-Tech Member
 
Joined: Jan 2004
Posts: 148
Likes: 0
From: Toronto, On, Canada
Default Re: how much fuel do i add for every pound of boost

Add a pound of cheese for every pound of boost
Reply
Old Jul 3, 2009 | 08:02 AM
  #10  
hawkturbo's Avatar
Honda-Tech Member
 
Joined: Sep 2007
Posts: 276
Likes: 0
From: Dominican Republic
Default Re: how much fuel do i add for every pound of boost

the stock fuel presure is 45 ? then if a got 10 psi of boost need to raise to 55 etc sorry my english is bad jejeje
Reply
Old Jul 3, 2009 | 08:11 AM
  #11  
96 GSR-T's Avatar
Honda-Tech Member
 
Joined: Mar 2006
Posts: 6,381
Likes: 0
From: Newark, DE
Default Re: how much fuel do i add for every pound of boost

Originally Posted by hawkturbo
the stock fuel presure is 45 ? then if a got 10 psi of boost need to raise to 55 etc sorry my english is bad jejeje
your fuel pressure regulator will add a lb of fuel pressure for every lb of boost for you as long as it is a 1:1 regulator.
Reply
Old Jul 3, 2009 | 09:49 AM
  #12  
hawkturbo's Avatar
Honda-Tech Member
 
Joined: Sep 2007
Posts: 276
Likes: 0
From: Dominican Republic
Default Re: how much fuel do i add for every pound of boost

Originally Posted by 96 GSR-T
your fuel pressure regulator will add a lb of fuel pressure for every lb of boost for you as long as it is a 1:1 regulator.

ok A-1000 for the goods lol
Reply
Old Jul 4, 2009 | 11:47 AM
  #13  
lsturboej1's Avatar
Thread Starter
Junior Member
 
Joined: Jun 2009
Posts: 17
Likes: 0
Default Re: how much fuel do i add for every pound of boost

thanks for all ur help guys i think i get the genreal idea of the whole concept
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
91crxturbo
Forced Induction
2
Jan 8, 2007 04:48 PM
irocdaparty85
Forced Induction
7
Oct 28, 2005 10:36 AM
EGJDM
Forced Induction
14
Aug 21, 2004 10:53 PM
Sinner
Forced Induction
2
May 24, 2004 10:44 PM
ZCHF
Forced Induction
3
Mar 1, 2003 03:20 PM




All times are GMT -8. The time now is 03:39 PM.