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Old November 17th, 2007, 09:56 PM   #1
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Fuel Injectors...


I recently upgraded to from a 98 GT to an 04 GT and the car seems to be guzzling gas more my 98 with 4.10 gears. How can I tell what size injectors are in my car?
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Old November 17th, 2007, 10:08 PM   #2
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Stock is 19#, injector size doesn't really make a difference though as the car is only gonna use as much as it needs. They're usually id'd by color:

Yellow: 19lb Injectors
Blue: 24lb Injectors
Red: 30lb Injectors
Green: 42lb Injectors

Are the most common ones.
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Old November 17th, 2007, 10:10 PM   #3
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Lime Green: 36lb injector
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Old November 17th, 2007, 10:15 PM   #4
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Okay, well the injectors that i have look pink, what are they?
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Old November 17th, 2007, 10:17 PM   #5
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These lime green ones are 42 pounders
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Old November 17th, 2007, 10:18 PM   #6
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Originally Posted by 98BlackBeast View Post
Okay, well the injectors that i have look pink, what are they?
21 pounders.
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Old November 17th, 2007, 10:23 PM   #7
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I've heard of folks claim Ford switched to 21 lb pink injectors on Mustangs near the end of 2002 and on many 2003 - 2004 Mustangs as well. They're (by the numbers) supposably 21.5 lb and it's rumored to be because of the increased in size (85mm) mass air meter. I don't think they're 21's personally, Ford normally rates their injectors at 39psi (I think) which is less than the industry standard (maybe 41 or 42psi) so they're a discrepancy as to what they'd flow with more pressure and I think that's how those pink injectors were rated. Maybe they were outsourced from a different company (not Bosche). I dunno just speculating.
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Old November 17th, 2007, 10:24 PM   #8
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^ that's exactly what I heard.

my 2001 was stuck with the poor little 19's.

till I dropped 39's in
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Old November 17th, 2007, 10:28 PM   #9
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My '04 GT is a virgin at 15,000 miles and came equipped with the pink ones.
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Last edited by gsjohnson; November 17th, 2007 at 10:31 PM.
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Old November 17th, 2007, 10:31 PM   #10
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Originally Posted by HMUSN View Post
till I dropped 39's in
Same here, now I'm stuck with 60's.
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Old November 17th, 2007, 10:33 PM   #11
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did you have to buy the pig tail harnesses too? splicing those in were a pita
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Old November 18th, 2007, 02:09 AM   #12
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Dunno, Modular Powerhouse did it (was up there getting tuned and needed them).
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Old November 1st, 2011, 10:19 PM   #13
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bringing this old thread back to life i have some brand new pink ones that i want to put in my stock 88 roller motor.i have a 93 upper and lower cobra intakes with mass meters and such any problems with idle ?
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