Alright, so i just installed a JDM header 4-1 with T1r exhaust and a cat ordered from SMSP. The car is leaking from the muffler to the s-pipe and i haven't been able to check if its leaking from the s-pipe to the b-pipe. I believe that the connect from the header to the cat is not leaking. After installing everything (with a leak) it seemed to drive fine, no CEL or anything. When i was test driving it, i gunned it once to see how it felt and no CEL or anything. Now later i went on the freeway was in fifth, rev matched down to 4th then down to 3rd and then i gunned it to 7900 and changed to 4th then directly to 5th. Next thing i know, i see a CEL and it was code 67. Any ideas what it might be (keep in mind, i might have 2 leaks and i dont know if that oculd be the problem) I plan on getting the leaks fixed tomorrow.. is there anyway i can buy gaskets for the muffler to s-pipe and s-pipe to b-pipe connectoions? Any help is appreciated, thx.

EDIT: i know that cel 67 means the cat, but i dounno why there would be a problem

 

anyone?

 

anyonew?

 

come on, nobody?

 

A leak way down by the s-pipe should not throw a cel. There must be a leak by your cat. Double check there.