There's no guarantee that a pnp ecu will run a ct9 safely never mind other turbos. For the price of a pnp you could easily buy an emb/ emu and have it mapped for your setup. No brainier in my eyes don't see why people rant and rave about these pre mapped ecus, you wouldn't run any other ecu with some other cars map (especially with a different setup) so what's the difference with the likes of jam/blitz/mines etc
Snow editions never came with yellow lights did they? Mine didn't. Mines had a sticker on the underside of the bonnet, and there was brackets in the boot for tyre chains as well as the thicker rad, beefier starter etc.