May 4, 2016 #1 Tom's Si Well-Known Member Messages 163 Reaction score 39 Location Sarasota, FL Vehicle Model Civic Si Body Style Coupe I've got a full bolt on NA build. I've acquired a set of NGK 1422's, the one step colder used in the Evo's. Will it hurt anything if I use them?
I've got a full bolt on NA build. I've acquired a set of NGK 1422's, the one step colder used in the Evo's. Will it hurt anything if I use them?
May 4, 2016 Staff #2 webby Administrator Admin Toys For Tots Messages 56,739 Reaction score 24,147 Ngk says only use one of their colder plugs if you're 70-100hp above stock.
May 4, 2016 Thread starter #3 Tom's Si Well-Known Member Messages 163 Reaction score 39 Location Sarasota, FL Vehicle Model Civic Si Body Style Coupe Thanks Webby.
