This is topic RUNNING RICH!!,since smog pump removal. in forum Tech Talk at Northern California Ford Owners  .


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Posted by Black94 5.0 (Member # 655) on :
 
My car is running rich!!...I have stock heads, cam, Edelbrock intake, exhaust and other basic bolt-ons....I'm running a 190lph pump, 24lb. injectors with a Pro-M 75mm bullit with an "optimizer" MAF adjuster..After I removed my smog pump now my car runs really rich..I tried to adjust my "optimizer" but it didnt help....

Do you think I need to purchase an adjustable fuel pressure regulator?, Are my 24lbs injectors a little too big for my current combo?..I'm guessing I have around 230rwhp..

I have a stock regulator reading 35psi at idle 40-42psi WOT...I have no vacuum leaks either..

Thanx-Rob
 

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Posted by SBSkid (Member # 2560) on :
 
hey man i have the same thing my car is to rich and i have all the mods as you do. it would help if some one told us what we could do.
 

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Posted by Blown Mystic (Member # 476) on :
 
the 24's arent neccesary
 

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Posted by Black94 5.0 (Member # 655) on :
 
Yeah, I know the 24lb. injectors are a little too big, but the factory 93-95 Cobra have them and they run under 230rwhp stock..

Like I said, it was running ok before I pulled the smog pump....

Basically, if I put an adjustable fuel pressure regulator on, would that solve my problem or would it be a waste of money?...
 

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Posted by 66 AC COBRA (Member # 904) on :
 
but the 93 cobra has a computer that is tuned for them straight from ford
 

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Posted by Cobra5.0Jeep (Member # 1482) on :
 

quote:

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Originally posted by Black94 5.0:
Yeah, I know the 24lb. injectors are a little too big, but the factory 93-95 Cobra have them and they run under 230rwhp stock..

Like I said, it was running ok before I pulled the smog pump....

Basically, if I put an adjustable fuel pressure regulator on, would that solve my problem or would it be a waste of money?...

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quote:

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Originally posted by 66 AC COBRA:
but the 93 cobra has a computer that is tuned for them straight from ford

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Yeah, but if you think about it, my computer was tuned for 19.lbs injectors from the factory and still thinks it has 19.lbs injectors because my Pro-M is "fooling it"....So it wouldnt really matter about the computer really as long as the MAF sensor is correctly calibrated...

I read in a 5.0 mag that they turned down the fuel pressure only to compensate for the 255.lph fuel pump...If that is true then I need to buy an adjustable regulator, but HOW is it true?...With a bigger fuel pump doenst the extra fuel just go back to the tank on a return style fuel system?..
 

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Posted by azl (Member # 2112) on :
 
what makes you think your car is running rich? did you get any codes? or are you just smelling more gassy exhaust? could it be because you no longer have the fresh air from the air injection going into your exhaust, causing it to smell more rich?

a fpr will probably help you out, and it's probably a good mod to have in there for future tuning too
 

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Posted by st5150 (Member # 51) on :
 

quote:

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Originally posted by Blown Mystic:
the 24's arent neccesary

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Nothing more to say on this topic
 

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Posted by Black94 5.0 (Member # 655) on :
 
I have an air fuel ratio gauge and it reads full green/rich at 1/2 open throttle...Its also bogs like it has 2.73's in it.....It also stings my eye's like crazy if I stand behind the car while its running..My Gas miledge is terrible too...

Yes, I know 24lbs. injectors are maybe too big for my current combo, but I was planning on getting new cylinder heads on it soon (about 2 years ago) ..I'm not gonna waste my time and money to buy a set of used 19lbs injectors and a 19lbs calibrated MAF especially when I gained .3 tenth's with the Pro-M and 24lbs's!!!....(Sawson, feel free to argue how I got those .3 tenths) ..

I guess the only way to find out if I need an adjustable regulator is to buy one and test it ...I just hate spending money on shit I dont need, especially when it takes away from my other up-grades!!...

Whats the lowest I can run fuel pressure before I run into atimization problems?.....Anyone?...
 

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Posted by Black94 5.0 (Member # 655) on :
 
Anyone?.....
 

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