Quote:
Originally Posted by Johnnyr
Oh I thought the higher boost the higher octane you should use on race day, but I do not want to foul plugs
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like said before you should be running a "race gas map" for the engine to run properly on race gas, the computer is only going to run the way it supposed to so if you have a stock or even a mild tune on your vehilce the ecm is not going to know what gas you put in there, basically just stick with 93 until you get a race gas map.
and if you are fouling out plugs on a regular you might want to think about getting a colder spark plug.