!! Stripped Cat Bolt !!

ZeeingAround

Soaked mine a couple of times with PB blaster overnight and tackled it the next day by myself. Sheared one off on the pass side. the rest made a lot of noise, but came off.
The Driver' side was the hardest to do. Sure was nice to get rid of those stock cats.
Mine was just on ramps. Wrap a towel around the end of your breaker bar so not to dent the hood if the bolt breaks.

__________________
Get some roosters for eggs and Bulls for milk . Then you will see that gender matters. Especially at milking time.

halogodx

Did you end up using a impact socket ?, if so what size.

ZeeingAround

I should just take a picture when I get home.

I believe it was a 14mm impact socket. Used that with two straight 1/2" extenders to the Ratchet with a piece of 1" Conduit over the end to give me the force needed to move.
I also have 1/2 impact swivel for the Drivers side.

__________________
Get some roosters for eggs and Bulls for milk . Then you will see that gender matters. Especially at milking time.

SPOHN

I strongly suggest against a swivel. It makes it that much harder. If you take the intakes out you can use straight extensions to remove thus making it a hole lot easier. Plus you don't have to worry as much about the impact socket coming off.

__________________

Synack

So take out the intakes AND the strut bar in my case.

__________________
NO LONGER OWNS A 370
Turbo FR-S

SPOHN

Yes. That's what I did and it worked perfect for me. It's tighter on the drivers side but it will slide in there straight. If I remember right you will need a couple of extensions up to about 32". Plus I had a two foot breaker bar. Just be carefull when it gives. Don't want it to slam into the motor.

__________________

Staples

Taking the stock air boxes out helped a good bit, but 4 out of 5 installs you'll have to break the head off the bolt to get the stock cats out. Try to use some sort of lubricant like PB Blaster or WD-40 and let it soak for a while. Make sure the car is cooled down, otherwise the bolts will still be expanded and you'll be setting yourself up for even more fail. If you're able to get the bolt a 1/4 of a turn, use more PB Blaster and try to hit the threads if possible and work your way back and forth.

If you have to snap the head of the bolt, so be it. It's not the end of the world and you can drill and re-tap. That's what had to be done on my car.

__________________
'08 Infiniti G37s - Forced Induction Fed

Methodical4u

Yep... did that myself as well.

ZeeingAround

Mine was only a 30deg swivel and it was tight. I had no trouble at all with slipping on the driver's side. Passenger side was more of a pain. The O2 sensors came off easily with an adjustable wrench.
Forgot to mention that I was installing the stillen g3 at the same time, so the strut bar and intakes were out.

__________________
Get some roosters for eggs and Bulls for milk . Then you will see that gender matters. Especially at milking time.