Quote:
Originally Posted by streetsweeper
i believe that the BR6 is a little colder than the TR6. It is not an extended tip, so you should be running them anyway. You could try BR7's but they may tend to foul out more with daily driving.
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Yea, Wes you are right. Typically a non-extended plug is colder by design. I am not familiar with NGK plugs, like Jeff posted I run Autolites. Their AR series is a pretty good plug. The AR3911 is a non-extended plug, non-extended helps stop predetenation, that is typical in nitrous vehicles. Those old plugs looked oily, like there was a little valve float, when you hit the box...
