The positive aspects of the NGK Iridium vs Bosch Iridium 4s was never addressed in the plug thread from over 1 yr ago.
http://www.xoutpost.com/bmw-sav-foru...park-plug.html
The only response was "try them and you won't go back".
Ran the NGKs in my E46 330i perf pkg 6 spd, didn't notice any improvement.
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'03 X5 4.4 Sport, last of the M62s (8-03 build date)
I believe in deadication to craftmanship in a world of mediocrity!
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