Ask a Mechanic Online and Get Answers to Your Car Questions
Hello! Welcome to justanswer!
Use stock Honda Plugs as the Pulsars have no benefit.
I got your answer of NO. I am confident you are right, but I did not get the explanation of your experience. Let me guess. They perform like OE NKG plugs for 5,000 or 10,000 miles then they begin to misfire.
I put in about 12-15 sets of them then stopped installing them. None ran better and two sets made the engine misfire so I went back to using OE plugs on all the vehicles I service. 1 of the two sets that caused problems was installed on a Honda Pilot that has a similar igntion system as your 99 Civic.