Originally Posted by
ewendc2r
Ok so lets talk about the difference between using ported IM/68mmTB/BigTubeHeaders-70mm exhaust on the setup vs stock ITR IM/63?mmTB/
a little off topic ... But a restrictive header or intake would act as a restrictor i.e. limit hp but not torque?? so, theoretically (and maybe this is where i am going all wrong) by using my current bolt ons I would limit peak output to max flow capability of current boltons. so Torque may taper off instead of building at high rpm?
i.e. Can we discuss, what effect on torque curve will restrictive bolt ons create?
TB -- I've sent you a pm.