I'm talking UK cars and performance mods for track day / 'ring use (and driving to and from these events).
I already have a dedicated track car and an E90 M3, I want something that sits between the two

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However, a standard CSL is just painfully slow, so wanted to know how far you could go without forced induction (and not theoretically or anecdotal comments, but real world experience of the kind of mods listed by the likes of Thorney et al).
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Mike R
Sarcasm is just a free service I provide.
Nordschleife, there's only two barriers to worry about - the ones on the left and the ones on the right

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CSL number 044