can anyone give feedback on this exhaust system? looks like the v&h propipe. was wondering how loud this system is and how it affects performance. is there a performance or sound difference with a 2:1 pipe vs drag style pipes? really like the look of the fat pipe but don't want to blow the neighbors ears out either. does the same exhaust fit 05 fi as the recent carb models? will i have to use a power commander type mod or will it run ok with just the exhaust? does this void my warranty? thanks for feedback. its great to learn from all of your experience! cj