Postby smj999smj » Sat Jan 17, 2015 11:01 am
I like Walker and Bosal due to past experience with them as an auto technician and I've never heard any issues with either of them with catalyst efficiency codes after installation, which is an issue with some lower end catalytic converters. Walker is one of the biggest exhaust manufacturers and have been around for many years; my only knock against them is some fitment issues on some vehicles (Chevy S-10's and Blazers come to mind).
As far as Magnaflow, I have not used their catalytic converters personally, but I do remember years ago hearing about issues of P0420/P0430 codes still setting after the installation of Magnaflow converters. I do not know if this is still the case, however.