no not sorted the missfire, it is deffo the turbo tho, as it is spooling up at idle (if you can call it that), after a few mins of keepin it running the missfire will clear through and when you go to pull off in it the turbo spools up again and it starts to miss again, then oil starts to run out of the turbo - manifold join, so think the oil seal in the turbo is fubar and therefore oil is getting into the cylinders under load (even light load) and causing it to miss

as for the Rst, can't say m8

oh and my mrs hated all magenta cossie's even this 1 when I first got it, now she loves the colour (just hates cossie's now )