Porting MAF and Fuel Pressure
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From: Phoenix, Az
Porting MAF and Fuel Pressure From what I've read, porting the MAF may/will cause a lean conditon. Will increasing the fuel pressure a couple pounds put it near to where it should be or will it create a rich condition at low RPM's? <img border="0" alt="[Burnout]" title="" src="graemlins/burnout.gif" />
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From: Aub, Fl
Re: Porting MAF and Fuel Pressure </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Dipstick:
<strong>From what I've read, porting the MAF may/will cause a lean conditon. Will increasing the fuel pressure a couple pounds put it near to where it should be or will it create a rich condition at low RPM's? <img border="0" alt="[Burnout]" title="" src="graemlins/burnout.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I don't think it will add any fuel pressure, it will lean the car out however. sometimes they will cause you to lose HP. just depends on your set up and how lean / rich you are without one.
<small>[ May 19, 2002, 05:11 AM: Message edited by: LS1JAY ]</small>
<strong>From what I've read, porting the MAF may/will cause a lean conditon. Will increasing the fuel pressure a couple pounds put it near to where it should be or will it create a rich condition at low RPM's? <img border="0" alt="[Burnout]" title="" src="graemlins/burnout.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I don't think it will add any fuel pressure, it will lean the car out however. sometimes they will cause you to lose HP. just depends on your set up and how lean / rich you are without one.
<small>[ May 19, 2002, 05:11 AM: Message edited by: LS1JAY ]</small>
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From: Phoenix, Az
Re: Porting MAF and Fuel Pressure Let me re-phrase the question.
From what I've read, porting the MAF may/will cause a lean conditon.
Will increasing the fuel pressure a couple pounds put it near to where it should be or will it create a rich condition at low RPM's?
My fuel pressure regulator is adjustable.
From what I've read, porting the MAF may/will cause a lean conditon.
Will increasing the fuel pressure a couple pounds put it near to where it should be or will it create a rich condition at low RPM's?
My fuel pressure regulator is adjustable.
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From: Phoenix, Az
Re: Porting MAF and Fuel Pressure This engine is going to be used in a sandrail. I'm looking for more air flow for increased HP.
May try the timing tricker too.
I've read a lot of post about porting the MAF with good and bad results. Don't recall if it leans it out thru the entire RPM band or just at high RPM. My thoughts are that if I increase fuel pressure, it will make it rich at low RPM.
I will have access to a Tech II, so I should be able to check it out. Problem is, I will have to buy a new MAF or a MAFT it it screws with the low RPM too much.
May try the timing tricker too.
I've read a lot of post about porting the MAF with good and bad results. Don't recall if it leans it out thru the entire RPM band or just at high RPM. My thoughts are that if I increase fuel pressure, it will make it rich at low RPM.
I will have access to a Tech II, so I should be able to check it out. Problem is, I will have to buy a new MAF or a MAFT it it screws with the low RPM too much.
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From: Las Cruces, NM
Re: Porting MAF and Fuel Pressure The MAF is not a restriction even on a 600 rwhp Forced Induction car, what is a restriction is the intake manifold. So some porting on the maf or descreening is just going to make it inaccurate which make tuning a real chore.
Gary
Gary
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From: Phoenix, Az
Re: Porting MAF and Fuel Pressure Thanks, I be leaving it alone. Simplifies my life.
One other question. I will be needing an inline fuel pump. I've used AcDelco ones from discount auto parts store before with good luck. Any suggestions as to which one to use? I've seen them with several with different pressure ratings. Anything to look for?
Thanks for the help guys.
One other question. I will be needing an inline fuel pump. I've used AcDelco ones from discount auto parts store before with good luck. Any suggestions as to which one to use? I've seen them with several with different pressure ratings. Anything to look for?
Thanks for the help guys.
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From: Las Cruces, NM
Re: Porting MAF and Fuel Pressure Depends on your horseower requirements, but either way I would not waste my time with an inline pump. Yes its a pain to replace the intake pump, but thats life.
Gary
Gary
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From: Phoenix, Az
Re: Porting MAF and Fuel Pressure I will not be using an automotive tank. Most all sandrails use aftermarket tanks and pumps. Look at the third picture down at this site. It will be similar to this.
http://www.users.qwest.net/~tmotorsports2/tatumcars/
http://www.users.qwest.net/~tmotorsports2/tatumcars/
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Verdad Gallardo TECH Fanatic
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From: Las Cruces, NM
Re: Porting MAF and Fuel Pressure Could not find the picture you were refering too, but I thought you ment an in-line booster pump. Aeromotive makes a good pump if you have sumped tank.
Gary
Gary
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From: Aub, Fl
Re: Porting MAF and Fuel Pressure </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Dipstick:
<strong>Let me re-phrase the question.
From what I've read, porting the MAF may/will cause a lean conditon.
Will increasing the fuel pressure a couple pounds put it near to where it should be or will it create a rich condition at low RPM's?
My fuel pressure regulator is adjustable.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Ahhh...... I see what you are saying now! sorry, it was like 5:30 AM when I replied to you and I must have been half asleep to misread that. Let me ask you this, why do you want to lean out the car just to turn around and try and richen it back up? are you seeking more timing or air flow?
<small>[ May 19, 2002, 12:30 PM: Message edited by: LS1JAY ]</small>
<strong>Let me re-phrase the question.
From what I've read, porting the MAF may/will cause a lean conditon.
Will increasing the fuel pressure a couple pounds put it near to where it should be or will it create a rich condition at low RPM's?
My fuel pressure regulator is adjustable.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Ahhh...... I see what you are saying now! sorry, it was like 5:30 AM when I replied to you and I must have been half asleep to misread that. Let me ask you this, why do you want to lean out the car just to turn around and try and richen it back up? are you seeking more timing or air flow?
<small>[ May 19, 2002, 12:30 PM: Message edited by: LS1JAY ]</small>
Thread Starter
On The Tree
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From: Phoenix, Az
Re: Porting MAF and Fuel Pressure Sorry, I meant that the rail will be similar to the third one down. The tank will be a spun aluminum one with a sump at the bottom to prevent fuel from sloshing away from the outlet bung. No way to use an intank pump without a lot of work and $$$$'s.
