hey guys i am just replacing my spark plugs due to misfire issues. I am finding difficulty finding upgraded plugs ie twin spark iridium or platinum. 4AGZE (4AGTE) was not in the dudes manual so i gave him the part number i was using NGK BCP7E S wondering if you guys know of any? part numbers would be helpful? Also whats the difference between resistor types and non resistor? WHat do they resist?
