As well as the manifolds.
The exhaust is a good unit, as it is made by Motoria from Korea.
The downpipe seems to be a quality piece so far, although some people have had to modify their heat shields to clear the O2 sensors, which isn't the case with every other downpipe.
The manifolds are trash. Ignoring the fact they hurt performance the lifespan of a manifold is about a year and a half before they crack beyond use.
