Quote:
Originally Posted by socaleuro
Hmmm...researched a little bit more on here to come up with NGK part # Bp5efs. Maybe this is the correct plug? Is there anyone else running the BP5ES or BP5efs plugs in their M103? 
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I run NGK BP6EFS in my twin turbo M103-12V....not sure why you would want a lower range then a 6 ?