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Originally Posted by ezmaass
FWIW - Looked at the N63TU specs and training materials from BMW, and it looks like the N63 used the same piezo injectors found on the N54 (also problematic); however, the N63TU is now using Bosch injectors found on the N20/N55 engines. I think this should confirm what nal13 was told by his SA - looks like BMW addressed this injector reliability issue in the technical update to the N63.
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So it appears now that all models (28,35 and 50) are using the same injectors, which appear to have been trouble-free in the N20 and N55 engines? Let's hope so!