If I removed my cat would it cause any problems or throw any codes ?
I'm thinking about doing this since I've got 200,000 + miles on my truck.
Also I'm considering a flow through exhast pipe to help with any restrictions.
Any thoughts on either of these options ?
Thanks

 

no problems, take a look at this
http://www.summitracing.com/parts/de...350-super-duty

This one is stainless for few more dollars http://www.summitracing.com/parts/dep-k4318s/overview/