RC:

Same here, I love it. Would get one instantly if I didn't have the R8, seriously. Basically a baby GT2 RS with a fantastic n/a engine, particulate filter or not (still not clear).

 

 

I think that there will be NO particulate filter in the RS. First they will supply the EU market, after that ROW.
A particulate filter will come with the next generation (GT4, ...).

It would be "stupid" from Porsche to deliver the GT3 without an the RS with the filter.
There is no way that the filter doesn't "influence" in a negative manner (Sound, performance, ....).