View Full Version : d/p - cat removal

03-26-2006, 06:49 PM
so im changing the exhaust i got on my car to a borla v2 today and i cant get the damn downpipe off of the cat...the bolts are so caked on there its bad, i couldnt break them off and my dremel is too big to get up in there to cut them off. i PB'd them but got no help with sprayin them. should i take it to some place and have them cut the bolts or does anyone know of a better way to get them off??? those 3 bolts are holdin up my progress damn it.....couldnt wrench em off and i couldnt find my breaker bar....damn my car is loud now ha someone, anyone got any assistance on how i can remove these bolts????

03-26-2006, 07:04 PM
if you loosen the cat and take off the other half of the exhaust it makes it a lot easier. You will need a lot of extension. + SEARCH
there was a thread abou this three days ago

03-26-2006, 07:10 PM
yeah my bad, i thought i searched here, i searched audiforums. the exhaust is off, all i got left on is a piece of the downpipe to the cat, i used extensions, swivel, etc got no love from those bolts

03-26-2006, 07:12 PM
loosen the cat from the turbo is what your talkin about, gives me some play with the cat?

03-26-2006, 07:38 PM
yup, if you have a swivel you can use the extentions to get at it. did you spray it down with pentrating lube or similar things. I two of my bolts broke inthere so I had to grind them out after I had the cat out because the nuts were welded on mine.

03-26-2006, 08:23 PM
I just removed my cat and downpipe yesterday. I unbolted it from the turbo, removed my CAI, disconnected the 02 sensors via their harnesses, and pulled the cat/downpipe up through the engine compartment. I figured this was easier than trying to mess with extensions, etc.

when pulling it up, make sure you turn the pipe around. It fits through the hole better that way. I did it by myself but two people would make it a whole lot easier (one to pull, the other to guide it through the bottom).

03-26-2006, 08:25 PM
...and after reading my last post, the second paragraph sounds like something from a porn forum...[:D]

03-26-2006, 08:29 PM
hahaha. yeah. I know what you're talkinga about now.

03-26-2006, 08:36 PM
yeah i sprayed them down a few times, they wouldnt budge. im thinkin i may follow what badass is sayin. and yeah that def sounded like a porn forum haha do you guys know what size bolt they are? where did you get replacements? i think the ones i got are 12mm, 1/4"? i was surprised about the 12mm though.....i was thinking most likely 11or13mm

03-26-2006, 08:57 PM
12mm sounds right. That's the stock size I believe.

03-26-2006, 09:18 PM
cool man, thanks for the help

03-27-2006, 08:01 AM
Here's a real easy solution to your problem. Unbolt your old cat from your turbo, then simply bolt on your new test pipe or gutted cat that you're going to buy after reading this post. :-)

03-27-2006, 07:13 PM
i got no clue how some of you got your bolts out in like 15 min!!! mine were soo bad now i gotta get them drilled out. going through the engine compartment was DEF the way to go. once the CAI is out, that shit is easy....thanks badass

03-27-2006, 07:27 PM
going through the engine compartment was DEF the way to go. once the CAI is out, that shit is easy....thanks badass

Not a problem. Glad I could help.[up]