Hi, i will say that i did approach Greenlight for my potential mods, along with increased bhp, and to be honest they pretty much ignored my suggested mods of air intake and Milltek exhaust, but, and i quote, 'we base our premium on the increase in power'! That said, my premium (with them) for all the aforementioned, with a Stage 1 remap was about £680.00, more than double my current 'stock' premium, ouuuchhhhhh!!!!
Andrew