I recently put new plugs in my Acura RSX Type S 2006 their boss platinum iridium plugs I took the stock ones out and now my car went from running a 15.1@92mph to 16.1@85mph. I guess go back to cheap plugs? Is this normal?

 

i'm no car expert but unless you have some really jacked up plugs i dont see why you would lose a full second

 

That's what you get for putting German plugs in a Japanese car! LOL!

 

Maybe so

 

I put ngk platniums in it i found that a peice of black tape was ontop of my spark plug it was getn fire but wasent burning as hot as the other 3 imma take it back to Bristol track tomm hopefully that will fix it!!!