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quickford1 · 01-15-2009, 11:22 AM

I don't know about the cyro , but I do sell alot of Autolite AR 3910X and AR3933X to the go cart guys. It's a surface gap plug that has proven to be worth some big gains on their dyno.
Rich

01-15-2009, 11:22 AM	#10
quickford1 Member Join Date: Aug 2008 Location: Davidson, NC Posts: 269 Likes: 523 Liked 20 Times in 12 Posts	Re: Spark Plug Indexing I don't know about the cyro , but I do sell alot of Autolite AR 3910X and AR3933X to the go cart guys. It's a surface gap plug that has proven to be worth some big gains on their dyno. Rich