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DiamondFire E3 Spark Plugs

8K views 16 replies 13 participants last post by  jsr 
#1 ·
Have any of you guys tried the E3 Motorcycle plugs? Or an E3 plugs for that matter? If their improved horsepower and fuel economy claims are true then I'm gonna give em a go at my 8k service.

http://motorcycle.e3sparkplugs.com/
 
#6 ·
Jeremyf073 said:
Are we supposed to change our plugs at 8K? ???

One of these days I really should read the manual to this machine ::)
Ya I should too but I'm to busy reading everything on this forum, much more info here than in that book.'lol.
 
#7 ·
E3 plugs have been proven to add horsepower and economy. But your talking in the gains of 1 to 5% which on a big V8 that would be a number worth the money on our bike. Well it doesnt make it look better. We already get 38 to 40 mpg and its only going to add maybe 1 to 2 hp. So not worth the money to me. not sure what the price difference is between those and some good NGK's. But that is just my opinion.
 
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