Mods done your car, anyway I try to buy some new plugs from the dealer they told me that p/n BUR9EQ & BUR7EQ are cold type of plugs, in other words they refered to them as regular plugs, now they say that BUR8EQ & BUR6EQ is a hotter plug? I very curious to find what is the big difference between hot and cold plugs? I always buy the 9 and 7 for my Rx7,never new they had a better type? Any of u guy's this or can explain the difference between hot& cold plug? Something simple as this driving me nutz. Thanks, khris

 

Use 9's all around. 9's are a COLDER plug. The higher the number, the colder the plug.



This rating is derived from the amount of insulation around the diode (whatever it is) and its ability to transfer heat. Hotter plugs dont have as much insulation and will not work for rotaries.



i have been running 9's all around for a long time with no problems, IMO makes the car run better.

 

Yep he's right i use 9's in all around. It works very well.

 

If you use 10's and up they tend to foul out faster.

 

they tend to foul out faster because they take longer to warm up. Unless your running circuit duty, use 9's. 10's and 11's are great for long, hot runs on your car i.e. circuit duty. If your just doing some sprinted runs with your car, use 9's. I actually use 8's and 9's sometimes. The engine runs REAL nice this way, and I don't worry too much about detonation.

 

do u have the p/n for 8?

 

bur8eq



lol...

 

Why 8s? Run all 9s.



I run 11.5s leading and 10.5s trailing, 17 psi on the street......