Oh sorry plain physics wider tube more air flow and when I throw 3.5 on yes it will have a tune and yeah i know stock exhaust can hold up to 350 and how does fluid deal with exhaust asking for info not to be an ass ??? Or what are u talking about ???
....and 350~WHP on a blower car is heads/cam/intercooler/E85/GenV or larger blower, etc...
actually 430whp is achievable on a gen3....costs more than id wanna spend on a grand prix....but it can.