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19# or 24# injectors with h/c/i ??

  • Thread starter Thread starter jb89coupe
  • Start date Start date Sep 11, 2004

jb89coupe

New Member
Sep 3, 2004
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CT
Sep 11, 2004
#1
  • Sep 11, 2004
  • #1
First off my current setup is in my sig. I want to pick up a Performer intake, 70mm tb, and a Pro M 80mm mas (soon, like this week). My question is whether my 19# injectors would be cool even if I rebuild and upgrade the h/c this winter.
I have to decide this before I buy the mas so I know which one to get. I don't plan on any power adders. Will I run into starvation problems with 19#s? Some people seem to say get at least 24# for a h/c/i combo, others say stay with 19#s unless you run a power adder. Anyone have some real world advice for me?

Thanks
 
R

Ray@VSK

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Aug 27, 2004
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Sep 11, 2004
#2
  • Sep 11, 2004
  • #2
Then ask yourself this, what's the point in upgrading the mas & throttle & even the intake @ that if your not going to upgrade the injectors, if your going to do anything do the heads, heads are the biggest bottleneck in the mustang gt's.
 

stangbear427

Active Member
Nov 11, 2002
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Sep 11, 2004
#3
  • Sep 11, 2004
  • #3
I'm running 24#'ers without a power adder, and stock heads. Just a cam and intake, TB and MAF, and the 19's weren't keeping up. Many people have pulled it off over 300HP, but better safe than sorry. If you are doing H/C/I, than you may as well step up to 24# and get an adjustable FPR. It's better to run larger injectors than necessary at a lower pressure than have injectors too small and be maxing them out. The main thing is to have the right MAF sensor for them- you want it to be calibrated for the injectors you have.
 

giddyup306

Founding Member
Oct 22, 2002
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Sep 11, 2004
#4
  • Sep 11, 2004
  • #4
For most n/a 302's the 19# are ok. If need be get an AFPR instead and increase fuel pressure.
 

04sleeper

Founding Member
Jun 22, 2002
2,674
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Dallas, TX
Sep 11, 2004
#5
  • Sep 11, 2004
  • #5
Ray@VSK said:
Then ask yourself this, what's the point in upgrading the mas & throttle & even the intake @ that if your not going to upgrade the injectors, if your going to do anything do the heads, heads are the biggest bottleneck in the mustang gt's.
Click to expand...
The lower intake is actually the biggest bottle neck.
Your plans sound very good. I like the approach you are taking.
I agree with giddyup306 on using 19 lb,ers for your setup.
I have personally seen 19's work fine in N/A for cars upto 350 RWHP. If you feel like going with more or add a power adder later then upgrade.

I am at this same route right now and my car is making some pretty good power for having Bone Stock heads, rockers, headers and such.
Although I will be replacing my shortblock before I get the new parts.
 
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