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Old 12-01-2012, 05:24 PM   #25
cycleman2
Studly Adventurer
 
Joined: Jan 2010
Location: Alberta, Canada
Oddometer: 515
If you do some research on the web on Iridium Spark Plugs you'll find a pretty consistent 1 or 2 hp gain in most applications. My view of why that is happening is that using them has the same effect as advancing the timing slightly, with no knock conditions.

They do work and are worth a try. Lots of nay sayers but go ahead and try them, you'll be pleasantly surprised.
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