1 or 2 step colder plugs
my kit is NEARLY complete, just need injectors, plugs, and misc bolts / hoses
ill be pushing 10 psi and around 235whp, the question is::::
1 step colder or 2 step colder spark plugs
thx
ill be pushing 10 psi and around 235whp, the question is::::
1 step colder or 2 step colder spark plugs
thx
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