I'm curious how hard it is to remove the catalytic converter from my 2018 Roadmaster. Do I need new pipes or can it just be removed?
7. Any repair costs or expenses if the Vehicle has had mechanical alterations made by You not using genuine manufacturer parts or accessories installed by a Dealer or Authorized Servicer (as defined); regardless of whether or not such alterations caused a failure.
Removing the Cat will void ENTIRE warranty not just the pipes here in the US. There are also extreme financial penalties. Not sure how often they are prosecuted if at all. They'd probably go after the shops vs individuals as the fines are per occurrence. ($25,000).In Australia your entire drive-train warranty is voided with a cat removal AND the makers have the backing of our Dept of Environment (same as your EPA).
DoE will even instigate the legal action if they find the cat off a car or bike; big fines... BIIIG fines! (especially for cat removal, loud pipes isn't as bad (and, for comparison, loud pipe fines can go from $1000 to $2500))
You guys are lucky in that you can do these things and only get minor penalties (like the exhaust system voided from warranty)
From what I've read, there are three main ways to decat:
1 - drill out through pipe end - long drill, messy, takes time to get it all out completely.
2 - cut a panel in the side, fold it back, chisel out the cat, fold panel back, weld, paint
3 - buy a section of pipe that's either designed without the cat or some guy's already done 1 or 2 on it.
1 = cheap, non-invasive to the pipe/box, not easily seen when inspected
2 = slightly less cheap, invasive to the box, needs welding skills, needs high temp paint, might be obvious if inspected.
3 = dearer, you're paying for his time + whatever #1 or #2 says but the time is his and the paint is his problem, not yours.
I,d probably try #1 myself, bugger it up completely then turn to #3