I stopped in a muffler shop(national chain) to get an estimate. $800+ so I decided I would tackle it on my own. All the parts are ordered and came in today. I have a question, the three studs on the flange after the cat, are they pressed in? I am guessing they are rusted badly so I will need to replace them. Any insight on this would be great! They rest looks straight forward.
Use some PB Rust Blaster or similar to help break them loose, then you should be able to unscrew them. Basically it's penetrating lubricant with a freeze that creates microcracks and then uses them to get the lube deep down. I've used it on some pretty stubborn stuff and was successful.
'11 LTZ, born Aug 2010, Fairfax, KS
V6/A6, Red Jewel Tintcoat / Cocoa-Cashmere, Sunroof
Cool Mods: Drop-in K&N air filter; 20% tint, DRLs on turn signals,
Painted grilles, 1-wipe washer, WeatherTech mats, CHMSL Pulser
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