I was going to replace my y-pipe with cattman Y. But cattman sent me the wrong pipe. But while I had my stock Y-pipe out I took out that honey comb thing on the end of the pipe. Now My car says check engine. What do I do to get rid of that? I'm I ok to drive like that?
Thanks.

 

for about ten minutes, that should reset the dummy light.

 

almost forgot, no driving her can't hurt. Congrtas on the Catmann Y, I am very jealous.

 

Thanks......Is it going to come back again?? Ok for me to drive like that??

 

Thanks. I almost $hit a brick

 

If your still there, some have said to leave it disconnected for an hour, but 10 did it for me. Sorry I didn't add earlier.

 

thanks

 

So you removed the front pre-cat? That will cause a check engine light and it will not go away. Put that back on and get the right cali spec y-pipe you need.