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Review on E3 Spark Plugs E3.72 Automotive Spark Plug: Enhancing Engine Performance, Pack of 1! by Donald Phillips

Revainrating 5 out of 5

good experience. Went in Mustang 302 67

Noticeable difference in performance and smell of exhaust and gas. They sent me the wrong plug and the supplier kindly refunded my money. All in all a good experience. Came in '67 Mustang 302 with Edelbrock 600 CFM carburetor and MSD ignition box.

Pros
  • Easy setup
Cons
  • Poor