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Even Then I Was Old Skool!
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10,398 Posts
Discussion Starter #1
Not talking about Granatelli COPs themselves, but the BOOT/SS Wire Connectors that look like this:



Granatelli claims better spark, connection, no radio static, blah, blah, and better performance. Just trying to get a handle on pros and cons over stock setup.
 

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Premium Member
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1,523 Posts
I used them with GMS COPS. After dyno runs that showed a loss in HP & torque over stock, Granatelli suggested that I go back to the stock spring setup with their COPs. WTF? I just went back to stock.

The boots work fine., but he solid connectors have to be shortened to work with NGK TR6 or other after market plugs. It's not a big deal, just a bit of a pain. I did experience one negative about the solid connectors. When I changed plugs, one of the connctors came off the solid conductor and stayed on the plug. Naturally it was number 4. Took several hours to get *&@%! thing off so I could remove the plug. Probably not worth the money or effort, IMHO.
 

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THE PROPER WAY TO POWDER THAT ASS
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7,531 Posts
Yes I use them and love them. Much easier to connect and take off. I also like the fact that its a solid connector and not a pos spring that is prone to breaking. I have long since junked my grannatellis but have kept the connectors throughout the years. They are a bit pricey but I love them. Just my .02
 

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Even Then I Was Old Skool!
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10,398 Posts
Discussion Starter #4
Jeff (207) is also using them on his Harley but I don't know if he's running TR6's. He doesn't seem to be having any problems either. They do have instructions online for TR6 plugs.
 
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