Roger Maestas: allows to to open a valve in the muffler to gain sound, or close it to silence the sound
Mikel Hall: So what is a variable muffler?
Enis McPenis: Bit of an annoying whistle there...
Steve Song: damn internet trolls...i have 69 camaro so i am gonna come here and bash decent daily driver sedan...yeah...nothing to say just ignore these ppl...
TonyTube407: That whistling sound is almost as bad as fingernails on a chalkboard. Sounds good with the valves open though.
Paul Walton: @laverkfc4stitching you mad? lol
Gaz Murphin: @pwice14 if u dnt fukin care thats ur bussiness lil skank, p.s wut the hell ur talkin bou!! so my car is POS , take ya lil bitch ass yellow soft puss away of my sight otherwise my camaro will take it for a snack DOUCH
Paul Walton: @laverkfc4stitching well obviously this is for a optima, not a camaro, no one cares about your old POS. Take your condescending remarks to another video, maybe something involving a camero? Jackass...
Gaz Murphin: oh lool gay sound compared to my camaro 69 ss
TheTexasHitmen: I'll stick with my '07 Sonata. Don't get me wrong. I love the styling and the performance of the new Sonata and it's sister car from Kia but I can't get used to the sound it makes through a performance exhaust. Maybe I'm used to the extra two pistons or maybe it's the exhaust. The whistle it makes when it's closed drives me nuts. Sound good when it's open though. Because it's a great car and it sounds good with the valve open I'll give it a "like".
Lancr04: Why is it whistling like that??
Shon Conner: I'm liking that alot, just bought an Optima. Maybe an up coming upgrade for me.