Thanks Guys

So Zorst, how much do they cost and where is the best place to go. Bruce has suggested Leigh from Rev Limit in the past. Also if my mate got a Unichip and then later had Warranty issues, I suppose the Unichip could be taken out.

With the Zorst doesn't this need a tune to be of any performance value and to ensure no mechanical issues e.g from the decrease in back pressure etc.