Bigmike99 New Member Dec 27, 2008 #1 :newsmile08:I got A thunderheader fo my nightster, going to start installing them tomarrow what I would like to know is the tquroue spects that important or will the extra grunts work? :newsmile08:
:newsmile08:I got A thunderheader fo my nightster, going to start installing them tomarrow what I would like to know is the tquroue spects that important or will the extra grunts work? :newsmile08:
Bigmike99 New Member Dec 28, 2008 #2 I have the upgraded Air system & the boxs and program for fuel flow
