E3 Spark Plugs

[tractorpuller105]

I was wondering if anyone has tried E3 Spark Plugs in their puller tractor? Any gain at all, or just go back to traditional plugs?

 

[504]

Let me put it this way, the parts house I use has had everyone they sold returned.

 

[bassndeere]

I run them, they have done me a good job. 3 years no problems. Points champion 2010, 2011 and leading in 2012. They will help improve weak/older ignition, but might not help newer high tech system.