Possible plugged catalytic converter
Thread Starter
Racer
Joined: Jun 2010
Posts: 290
Likes: 5
From: Winona MN
Possible plugged catalytic converter
So after testing, testing and more testing to find a problem with performance at higher RPM I decide to remove main converter as the pre cats are already gone. Well after unbolting the cat back I started the car to move it and you couldn't even tell the exhaust was unbolted it was so quiet. Shouldn't having no pre cats and just the converter be loud?
Instructor
Joined: Nov 2008
Posts: 199
Likes: 1
From: Asheboro NC
really depends on your engine package. A stock engine will be relatively quiet at idle. when you rev it you tell a difference. a bigger cam with longer duration will be louder. The main cat muffles a lot of sound on it's own.
