Performance gain with cutout!??! help me!!
<strong>Are you running the Borla w/ the open plate or closed? A Borla w/ no plate would do the same thing.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">if thats true why do cars dyno higher with open headers compared to a cut out, with the cut out your still bypassing the axle hump wich is restrictive.








