so basically either get it engineered or keep it on the downlow.
TBQH, the only cop who's ever noticed my Microtech with dash display was a TMU cop who was worded up by the EPA tester from melbourne (who also knew what to look for in terms of aftermarket injectors, FPR, turbo etc).
It's a pain in the arse, but I'm going the route of having a free flowing, quiet exhaust, boring looking turbo, and a standard but remapped ECU to avoid any more $500 EPA fines and to not give the police an excuse to defect or harass me. The easiest thing to do is to not have it stupidly low or insanely loud, or any garish bodykits then you're less likely to get attention to start with.