Put it this way:
I had a tangle with a 2010 RS 500 a couple of weeks back when I was in a mates IV which was stock, apart from a VI ECU, Injectors and a HKS RS Direct Drive Induction Kit.
Only the fuelling had been done to make sure the mods were running right.
We came out of Birmingham Airport and the Middle Aged driver of the RS decided to have a go and kept trying it on on the exit route that leads to a Dual Carriageway.
My mate gave the nod and I let loose, the RS was already 5 car lengths ahead and the driver was trying to pull away.
I caught him quickly and we cam to a halt at a set of lights.
When they went green, he began to drive like Miss Daisy as he knew the Evo would have ate him again.
I have never had an RS try it on with me before this as I am fairly certain that all Focus RS owners know that they don't stand a chance.
El