When it does misfire it doesn't matter how much fuel in the tank,
It miss a couple of times yesterday with 3/4 tank, but today not a thing.
And i pushed it over the speed a few times on my way home tonight.

If there was a fault with the cps wouldn't it play more oftern?
On boost the afr gauge is about 12-13.

I am running standard plugs will invest in a new set, But will need help with which are best for me please,

Thank for your help

Simon