I dont believe so. When the butterfly valve closes, the aim isnt to air seal the muffler.. its has a bypass where the exhaust gas travels up and down the muffler length a couple of times, like your stock muffler, and then passes out through the end of the muffler..
youtube it if you don't understand how it works
FYS
My fake shit rocks!
Winton 1:35.4
Wakefield 1:07.87
i understand how it works. i have a varex muffler on my impreza and when its closed it feels much more restricted then stock and xforce even say its quieter then stock which means its more restricted. i just thought as the s2000 is tuned so high that a varex muffler when closed, would be to restrictive for an s2000 and damage it. Also when i was at xforce getting the varex put on the impreza they said not to put one one the s2000 as they weren't designed for it and can damage it.
i understand how it works. i have a varex muffler on my impreza and when its closed it feels much more restricted then stock and xforce even say its quieter then stock which means its more restricted. i just thought as the s2000 is tuned so high that a varex muffler when closed, would be to restrictive for an s2000 and damage it. Also when i was at xforce getting the varex put on the impreza they said not to put one one the s2000 as they weren't designed for it and can damage it.
It might be restricted but i dont think more then stock. It definantly isnt quieter then stock when its closed.
Its quite expensive. Liverpool Exhaust is owned by my uncle, so i get them done relatively cheap. Theres a video on YouTube of when i first got them, sorta breaking them in. http://www.youtube.com/watch?v=h-Kzh_mqnCY Hadnt driven the car for a couple weeks prior to that, hence the smoke.
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