Hi,
in general if you know how to remap an ECU you might be able do that. But that means you have to know how to remap; not only to use / install modified tuned files from others.
Additionally i have to say that i havent't done it in person for a 986 and i don't know if the ECU software offers all parameters you'll need.
There might be other ways to get the result by using an additional programmable ECU that adds fuel in specific situations. But in general that is a bit complicated and if you don't want to harm your catalytic converters i would not recommend that.
Easiest way is to buy a car with carburator and no cats. Than to modify intake with a single carburator battery, single open long funnel intakes, modify the exhaust and let the beast run a little bit too fat.
Than you have the sound you're looking for.
Regards, Markus