I've just been checking on a few merkin sites. Power Commanders are 9. They can do a deal for a PC and a K+N plus post for around 0. Even if I get caught by Vat and Duty it's still only going to cost me around 200gbp. That seems like a bargain to me? I've been corresponding with a company in the US and they told me not to fit a TRE because it causes a flat spot that cannot be ironed out. They reckon a crazier first 4 gears and 5-7hp on top. It'd be interesting to see what it makes with the PC, K+N and my new Micron race cans.