well i was told it would effect the performance of my car putting baffeled mufflers on and i decied to go with the flows anyways and well sadly i made no difference and sounds great better then the magnaflows i had and hks. and the noob thing i might be new here but to tell you the truth i dont care about the little green N by my name are you still in highschool are you the big bad senior picking on the freshman? it was a simple question what is the top speed of a z32 minus the govener im looking to gear my car different and am going to lower them so i can accually use them there isnt anywhere here to go any faster then 150.