that's odd.i put the G codes in mine.brand new,not used.they work great for me.
From all the info I can find.
7.3 L IDI Ford Factory Turbocharged ( G code ) *NEW* Diesel Fuel Injectors, fits 1993, 1994 OEM # 2C3Z9VE527ARM, 991864C91
7.3L IDI Ford Diesel Pickup with serpentine belt ( E code ) * NEW * Diesel Fuel Injectors, 1992.5, 1993, 1994 OEM # 2C3Z9VE527DRM, 991838C91
7.3 L IDI Ford ( B, BB, C or D code ) *NEW* Diesel Fuel Injectors, fits 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992 OEM# 2C3Z9VE527ERM, 2C3Z9VE527FRM 991612C91
When stricter emissions (EPA) in 93 - 94, the IDI was supplied with G code injectors, that was so the IDI could pass the emissions test, that tells me that the injected fuel was lessened. No place can I find what the CC of a G code is, nor can I find that for the BB code. I can only surmise that the BB code has a higher CC of fuel injection. Why there is a difference in the E code for the above years with a sepentine belt is also a mystery.
I think Gary (ican) was only demonstrating the difference of the pintles. I don't see where he said they wouldn't work, only that he experienced more power verses new G code to new BB code.
Interesting.
I do wonder though how much of the performance difference you saw was 'BB' vs 'G' spec and how much was new vs old injectors.
If you reread his post, he said he put in NEW G codes before he changed to BB code.