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Standard Plugs -11C or -11B?

OK ladeez'n'gennelmen I did my research and conscientiously used the searchy thing to try to find which plug is best for a Japanese TT over here. At last, I find the guru's site which say NGK PFR6B-11B is right and -11C is probably OK. In a pm, the guru himself said -11C is better for UK fuel and will be better than the -11B. :confused: :confused:

NGK's site says -11C and Courtesy's says -11B (but of course that is for US fuel so maybe -11C is right after all.)

 

Heeeelep - which one? -11B or -11C?

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    UK and US fuel have the same octane rating just different scales of measurement.

     

    11B is for higher boost cars, if yours is still stock gio go for the 11C, 6 of one half a dozen of the other, on a stock car, if you will excuse the pun :D

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    OK Topless well if you, NGK and half the guru agree, you must be right :D :D

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