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  1. Red Dragon

    NGK Iridiums: BCPR7EIX or BCPR7EIX-11??

    I guess I should add that I am the new owner of Rob Carlile's 91T that many of you may have seen on his website, especially his write up of the Lexus/Reimer AFM upgrade. This is my third supra, second turbo, and first one modded by someone other than me, so its taking some time to get used to...
  2. Red Dragon

    NGK Iridiums: BCPR7EIX or BCPR7EIX-11??

    Hey everyone, After spending nearly the entire day trying to chose a spark plug for my 91T, running 1.1bar, I decided to give the NGK iridiums a try, and one step colder than stock (hence 7 instead of 6) Question is, do I want the "-11" version, which from what I understand has something...