5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

331 is acting ignert

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Old Feb 18, 2006 | 03:31 PM
  #21  
86HOGT's Avatar
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Default RE: 331 is acting ignert

Wellhe said the engine idles fine.

I'm going with bigger injectors as he knows and seeing where his A/F ratio is at some how.
Old Feb 18, 2006 | 08:22 PM
  #22  
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Default RE: 331 is acting ignert

Now what else does the car do? do the rpms hang up when you shif? assuming its a 5spd. when you go to stop and push the clutch in do your rpms hang at like 1200-1500? if so you have a vaccum leak.
It does this a little bit - like .5-1.5 seconds, then it settles down to 900. You know, like at a light or in slow traffic.


Also what is your Fuel pressure. with 19's and your combo i would say you would need to run 42psi at idle.
Fuel pressure is 45psi at idle
Old Feb 19, 2006 | 11:58 AM
  #23  
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Default RE: 331 is acting ignert

Well being that you only run 19lb injectors you could get the same effect if the a/f ratio is to lean. I say get some 24lb injectors and maf put that in and go from there, I don't think you need the 30's yet. 30's are for H/C/I with a little bit of boost like 6 psi or so. When you get closer to 10 psi you would need 42's so on and so forth.
Old Feb 19, 2006 | 03:56 PM
  #24  
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Default RE: 331 is acting ignert

i think a few people have missed where he said also wants to run a 150shot so the #30 injectors would work out well with his current mods and then he could back off his fuel pressure a lil bit so that would keep it from running so rich
Old Feb 19, 2006 | 11:50 PM
  #25  
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Default RE: 331 is acting ignert

yep i missed that
Old Feb 20, 2006 | 08:56 AM
  #26  
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Default RE: 331 is acting ignert


ORIGINAL: Jasperstang308

i think a few people have missed where he said also wants to run a 150shot so the #30 injectors would work out well with his current mods and then he could back off his fuel pressure a lil bit so that would keep it from running so rich
i would say with the 24's since you arent going to be running nitrous all the time and get a wet shot of nitrous so it already has the extra fuel you need besides running rich all the time with the 30's
Old Feb 21, 2006 | 11:55 PM
  #27  
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Default RE: 331 is acting ignert

ORIGINAL: stanglx2002
ORIGINAL: Jasperstang308
i think a few people have missed where he said also wants to run a 150shot so the #30 injectors would work out well with his current mods and then he could back off his fuel pressure a lil bit so that would keep it from running so rich
i would say with the 24's since you arent going to be running nitrous all the time and get a wet shot of nitrous so it already has the extra fuel you need besides running rich all the time with the 30's
stang, the system I have is a wet system. I'm going to go with 24's and an 80MM MAF.
Thanks!
Old Feb 22, 2006 | 12:22 AM
  #28  
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Default RE: 331 is acting ignert

the 76mm C&L MAF kit works great it just another option
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