Took my used new to me 2014 570 le out last weekend had a blast but the decal popping was kinda aggravating.
So i read on here somwhere I thought it was recommended to change to a ngk cr9eix
But when I removed the stk plug it was a ngk cr7eix
Now I’m confused the 7 is hotter right?
Ant help appreciated
So i read on here somwhere I thought it was recommended to change to a ngk cr9eix
But when I removed the stk plug it was a ngk cr7eix
Now I’m confused the 7 is hotter right?
Ant help appreciated