Sorry fella, I thought you were buying an RSTuner and getting a KTR IK, apologies, I've obviously got you confused with someone else.Im not doing any power upgrades. Its just that my tyres are worn out and will probably be illegal in about 1-2 months. So it has come at an awkward time of year thats all. I would rather have cheap tyres and be legal.
In any case, whether you're doing power upgrades or not, as per Evil Giraffe's post above, try and extend your budget for tyres as much as possible. It will work in your favour in the long run if it helps prevents you having an accident.