big-kid New member Joined Dec 2, 2007 Messages 179 Age 54 Location indiana Oct 22, 2009 #1 generally, if i removed about 1.5" from the headpipe just before the first bend (right after the Y pipe) on an AAEN single pipe how would this change my peak RPM. would it raise it or lower it and approx. how much. thanks...
generally, if i removed about 1.5" from the headpipe just before the first bend (right after the Y pipe) on an AAEN single pipe how would this change my peak RPM. would it raise it or lower it and approx. how much. thanks...
