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my 99 came with 19#(9f953) but the 01+(romeo) came with 21# which were pink in color I believe. don't remember the color of my 19# but they were not pink
Read much? :D
 

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That's fine niether of us have flow numbers so to be 100% sure we'd have to get an orange and pink one and get them flowed.
 

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That's fine niether of us have flow numbers so to be 100% sure we'd have to get an orange and pink one and get them flowed.
True, Jerry is just the best resource I have. :D
 

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I have pink injectors on my 03 GT and can anyone explain to me how come when I connect a scanner it says Im running 42lbs of fuel pressure. The car is bone stock with an auto trans. Went to the track and slapped on Toyo Proxes RA1's tires in the rear and ran a 13.9. To my knowledge the car is bone stock, smooth idle, stock heads, stock pullies, stock intake and sotck exhaust. On the highway I cruise at 65mph and the rpms are just above 1500. If I am not mistaken I have 3.27 gears. The car has 53K and on the dyno it reads 258 rwhp and 300 torque.
 

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here ya go
 

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I have pink injectors on my 03 GT and can anyone explain to me how come when I connect a scanner it says Im running 42lbs of fuel pressure. The car is bone stock with an auto trans. Went to the track and slapped on Toyo Proxes RA1's tires in the rear and ran a 13.9. To my knowledge the car is bone stock, smooth idle, stock heads, stock pullies, stock intake and sotck exhaust. On the highway I cruise at 65mph and the rpms are just above 1500. If I am not mistaken I have 3.27 gears. The car has 53K and on the dyno it reads 258 rwhp and 300 torque.
factory freak :dunno
 

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The pink (lavender) injectors are 21 lb/h, they were used in the 2V engines from late 2002 through 2004.



They are Bosch 0-280-150-561 as shown above, rated for 22.0 lb/h at 3 bar (43.5 psi).

from Stan Weiss' site: (click here)


However because Ford operates them at 40 psi that rating is downgraded according to this formula:



sqrt(40 psi/43.5 psi) * 22.0 lb/h = 21.1 lb/h

In 1999 reviewers and owners found that production Cobra's were not producing the claimed 320 fwHP, some reportedly down by as much as 30 HP. They halted 1999 MY production and there was no 2000 MY Cobra in the US.

This was a real "black-eye" for Ford and they began a lengthy review of the HP claims for all engines. In this review it was found that the 19 lb/h injectors in the 2V engine (same as used with the 225 fwHP non-PI engines) were only marginally capable of supporting the PI engine's claimed 260 fwHP. The 21 lb/h injectors were quietly introduced into the late 2002 MY production.
 

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I have pink injectors on my 03 GT and can anyone explain to me how come when I connect a scanner it says Im running 42lbs of fuel pressure. The car is bone stock with an auto trans. Went to the track and slapped on Toyo Proxes RA1's tires in the rear and ran a 13.9. To my knowledge the car is bone stock, smooth idle, stock heads, stock pullies, stock intake and sotck exhaust. On the highway I cruise at 65mph and the rpms are just above 1500. If I am not mistaken I have 3.27 gears. The car has 53K and on the dyno it reads 258 rwhp and 300 torque.
The car is a complete anomaly if it is a bone stock auto and putting 258/300 to the wheels, they typically put down 220 or less on a DynoJet inertial dynamometer. Did you record AFR during the dyno run? If it was as it should be (12.5 to 13.0:1) then it must at least have a tune as the late '02 through '04 GTs with the pink injectors run PIG rich at high loads and WOT.

The returnless fuel system aims for a 40 psi (or 53 if the fuel is hot) pressure differential across the injectors, from the rail to the nozzle tip (in the manifold). The fuel pressure PID (Parameter ID) read by OBD2 scanners represents what the PCM thinks the differential pressure across the injectors is, however it is not THAT accurate. It doesn't need to be because of the adaptive learning capability (short and long term fuel trims)--the allowable range is 39 to 43 psi.

If you were to read the real pressure at the fuel rail, at idle, you would find it to be 9 or 10 psi less than the PID value, as at idle the manifold vacuum is 18 to 21 inHg or 8.8 to 9.9 psi (negative psi as it is a vacuum). The 29 to 33 psi in the fuel rail pushing fuel through the injecter, plus the 9 to 10 psi (vacuum) sucking it through = 39 to 43 psi "across" the injector.
 

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^^^ What he said.:)
 

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Cliff is the man. Even though his posts make my inferior brain hurt. ;)

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