Originally Posted by Matt
I know of a company that claim to have (successfully) remapped a 200 opti
It's not exactly rocket science, just requires the proper electronic tools and a bit of software expertise. I have a friend who copied the aftermarket remapped ECU from my Saab turbo and flashed it onto his. With someone like that, and access to the appropriate engine, it shouldn't really be that hard.
Legalities of such shenanigans are another matter, particularly when it comes to messing with emissions controls. In the US there's a potential $100,000 fine from the Environmental Protection Agency. Not that you're likely to get caught, but that's the reason techs give for not swapping ECU's from a 90 to 75 as I wanted to do...