when BR9ES?

dburroug

New Member
Jan 16, 2009
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so the br9es is one heat range colder for "high performance engines"....what would that include? Basically at how "high performance" should i use the BR9ES plug instead of the BR8ES?
 
when i got my blaster it had a 9. all that was done was an exhaust system and when i changed the plug i went to an 8 and it ran better with a noticable difference. i would say save the 9 for a heavily modded engine.
 
dont get a resistor unless your concerned about your local ham radio crowd getting fuzzy signals on their CB's lol trust me just get a B8es plug ,the 9 series is a colder plug with more insulation its not what you think ..it makes no more power and will be prone ot fouling ,not what you want ...id only use it for methanol or nitro additive with high compression
 
If I plan on running the PISS! out of mine I put in a B9ES, they will still foul out in my engine if I'm not all over it!, I typically run the B8ES.