[Dancri77]

I purchase them, what a mistake. After using them for a while I took them off, heard lots of noise inside, lots of metal rumbling. Core was destroyed, I guess no more quiet effect. I am not living is US so asked for a core replacement, shipping back and forth overseas is nuts. Request denied. I asked again saying I don't need any warranty, I'll install myself. Request denied again, was offered a 20% discount for a new exhaust... what a joke. When I purchased the exhaust I did not see anywhere the 40 hrs service interval, I guess this is their way of avoiding any warranty or customer complaints for such a poor product. Lots of money wasted, don't do this mistake. Reinstalled the Oem one.