i took my good sounding drone free magnaflow off my ls3 and put it on the l99
it no longer sounds good to me. it has a forward resonator the l99 needs more than a cat back exhaust to sound good. the tune will fix the dod fart sound. i'll will do the ls3 conversion at some point.
https://www.autohance.com/magnaflow-...yABEgLF8fD_BwE