OK I am looking to start suping up my 2012 mazda 3 speed, I just ordered a cork sport sri earlier today, also bought the cork sport down pipe. Now I am looking to buy a blow off valve and am interested in the turbosmart dual port bov. Does anyone have this and know if it's a worthy addition or is there something better? Next question, should I change to better plugs with these additions or should I stick with the stock ones? And finally, after these additions do you guys think it will be time to get a Re-map of system? I would think the stock set up won't work well without getting it re-mapped but I am not the best when it comes to mechanical things.