imported_Yuki

I've got "Red 95 Honda Civic DX Coupe Special Edition (EJ4 w/ D15B7)"

I'm being told by mechanics not to use Bosch. Platinum spark plugs.

Right now I need new ones cause the Bosch Platinum ones I bought and installed in April are sparking backwards a bit and developing this white film on the arcs. Also one looks like it's arc (the metal bend that sparks) has a small crack developing.

So which is best for me to get?

imported_Yuki

And yes I want performance out of this engine if that makes a difference.

imported_Cablerat

get NGK standard.

No spark plug is gonna help your performance out of a D15B7.

That white film could be because the engine is running lean, timing may be advanced a bit.

imported_Yuki

Thankx. that's what my mech. also said.

dingus88

I've also saw many Bosh's have the electrode turn white....I personally hate them and think they are garbage. GEt NGK standard or platinum if you want longer life out of them.