Originally Posted by markcoznottz
I use PP8's gapped to 0.6mm, and i run 25psi for 350 bhp. Mines just started to miss slightly, so i need to change em. Price has always put me off other plugs, but PP8's are only 25 quid from PJ's. Whether C59's would last longer i dont no, iv never used em.
I've always been led to believe PP8 were a standard Escort Cos plug and NOT any good for 300+ bhp cars, so just goes to show then
