Considering changing my spark plugs at the next service (early) after 5 years of the existing ones .
Done a search and checked the FAQ nowt!
Any one gone aftermarket and noticed an improvement if so what did you go with?

 

Does it make much difference? if so what?

 

i bought some from hardtopguy as way cheaper, do not think it really makes that much difference though

 

I used Splitfires on one of my old civics and they melted, id go with the Honda ones from hardtop guy.

 

I would use NGK Iridium or Denso Iridium (IK22 are standard heat range, IK24 are a step colder).

Chris.

 

Thanks Chris any benefit to going to colder plugs other than longevity?

 

Depends if your S is standard or not.

Chris.

 

Chris stock engine so I guess no benefit!?

 

for some reason I prefer the denso..

gapping the plugs when they are iridium is a real pain though.. and make sure they don't get loose.