Quote:
Originally Posted by G.E.
so you are saying my best bet for the l99 is corsa? in the sense of the least hassle.
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The AFM on the L99 causes a buzz or drone around 1700 rpms with most aftermarket exhausts. Even my GMPP "off road" axle back has some buzz or drone right around 1700 rpms (and I still have all the factory resonators, etc)
Corsa exhausts are famous for not causing any drone (very quiet cruise while still being aggressive at WOT). But the L99's AFM is very unique, and I have no first hand experience with the Corsa Catback on an L99. It would be great if someone with an L99 running a Corsa Catback would comment on the AFM.