hey i was searching around and couldn't find the issue I'm having. I have a 99 maxima se. I am in the process of putting in my warpspeed y pipe. Problem is i cant get the stock one out. i removed all the bolts and nuts i think. It's completely detached from the cat. I removed the two to the engine block and the other six. But it just wont come out. It's stuck. it wiggles a lot but thats it. anyone know whats going on?

 

02 sensor wire?

 

no that was all out. I got it though. Good old pry bar lol. There was a lip on one of the pipes holding it in along with lots of rust. thanks anyway though

 

Now I got the new one in, but having trouble with o2 sensors. The front one seems to be too big

 

uh oh lol thats not good. It fit into the stock one or is this a new one you bought? If it is the stock one then put the old Y back on and you will have to take it to a muffler shop to get a bung that fits welded in.

 

the bung is too big? everything should bolt right up no problem. i got warpspeeds SS304 y pipe and its very good quality and the fitment was perfect.

 

The bung was too small, the back one fit in perfectly.

 

Think it's possible to just buy another smaller o2 sensor? might be easier than trying to make the hole bigger.