Ive had my tbe on my car for almost a year now and I need to remove the down pipe and test pipe, so if I do this am I gonna have to change the gasket from the o2 housing to the dp and the gasket from the dp to the test pipe? thanks!

 

It really depends on the condition of the gaskets when you remove them. Assuming they all arent torn apart you should be fine. You most likely have a donut gasket connecting your downpipe to your o2 housing and a regular 2 bolt flange gasket for the others. You could just buy them to be safe. Even if you reuse the old ones you never know when you are going to need a replacement gasket and they arent that expensive anyways. Oh and when you reinstall everything remember to use a gasket sealer and antisieze on all of your nuts and bolts. You will thanks yourself later.

 

better to be safe than sorry. cough up a few bux and get some new ones.

werd