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Discussion Starter #1
I have been seeing people having problems with the "canned" tunes offered by some EEC tuner vendors.

One of the things you should be aware of is the TYPE OF stock INJECTORS found on 4.6 SOHC modulars.

2003-2004 GTs use PINK Injectors while earlier modulars 1996-2002 used YELLOW injectors.
EEC MAF transfer tables and injector sizes are different inside the PCM calibrations.

And what is the difference between PINK and YELLOWS?

Flow Rate:
PINK: [email protected]
YELLOW: [email protected]

That small 2cc translates into a very small difference, 20 vs 20.2 lph (that is the max flow rate in liters per hour at 100% duty cycle)
So basically both injectors are the same size?..... WRONG! that is about half a galon of gas per hour on a v8!

That minuscule difference is important, and you will experience small problems at idle, part throttle and WOT.

This is a table listing for some FORD injectors:

First is the BOSCH number, Denso number, Size & top type
280 150 556, F0TE-D5B, 19#, jetronic old style, "Yellow Top"
280 150 561, F0TE-D9B, 22#, jetronic; "Pink Top"
280 150 947, F1TE-D9A, 24#, jetronic; "Blue Top"
280 150 945, F1SE-E5A, 30#, jetronic; "Red Top"
280 150 558, ?????????, 42#, jetronic; "Green Top", SVT Lightning

Flow rates can be checked here (use bosch number):
WitchHunter Performance - Injector Cleaning & Flow Testing Services

So, if you are experiencing bad performance in your 2003-04 GT it could be that your tuner gave you a bad calibration intended for ealier GTs.
 

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I have been seeing people having problems with the "canned" tunes offered by some EEC tuner vendors.

One of the things you should be aware of is the TYPE OF stock INJECTORS found on 4.6 SOHC modulars.

2003-2004 GTs use PINK Injectors while earlier modulars 1996-2002 used YELLOW injectors.
EEC MAF transfer tables and injector sizes are different inside the PCM calibrations.

And what is the difference between PINK and YELLOWS?

Flow Rate:
PINK: [email protected]
YELLOW: [email protected]

That small 2cc translates into a very small difference, 20 vs 20.2 lph (that is the max flow rate in liters per hour at 100% duty cycle)
So basically both injectors are the same size?..... WRONG! that is about half a galon of gas per hour on a v8!

That minuscule difference is important, and you will experience small problems at idle, part throttle and WOT.

This is a table listing for some FORD injectors:

First is the BOSCH number, Denso number, Size & top type
280 150 556, F0TE-D5B, 19#, jetronic old style, "Yellow Top"
280 150 561, F0TE-D9B, 22#, jetronic; "Pink Top"
280 150 947, F1TE-D9A, 24#, jetronic; "Blue Top"
280 150 945, F1SE-E5A, 30#, jetronic; "Red Top"
280 150 558, ?????????, 42#, jetronic; "Green Top", SVT Lightning

Flow rates can be checked here (use bosch number):
WitchHunter Performance - Injector Cleaning & Flow Testing Services

So, if you are experiencing bad performance in your 2003-04 GT it could be that your tuner gave you a bad calibration intended for ealier GTs.
Good to know! We put a tuner on my buddys 04 Mach 1 and it was having timing and fuel issues! Guess this is why!
 

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That could cause issues due to having having it to lean or to rich. Canned tunes are tunes that are good on the car that they tested it on or the car with X mods and later tweeked. Still doesn't mean its good for you car. 2 2003 GT's with the same mods might like this much fuel and this much timing, do it to the second identical car and it runs like crap. If anyone on this site or has a mustang relies on a canned tune, your not getting the best performance for the money you spend on getting a tuner.
 

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Good to know! We put a tuner on my buddys 04 Mach 1 and it was having timing and fuel issues! Guess this is why!
The 03-04 Mach had the same injectors. Canned tunes isn't the best way to go. If you order tunes over email, you have to get it dyno tested and if it's not good, then you have to call them or email them with your results. Then they can tweek the tune, re-email it to you.
 

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Discussion Starter #5
Advice, if you have a canned tune, do a datalog and send that to your tuner, good ones (Bama) should be able to "retune" using the datalog as base.
 
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