For those that swapped their own DP

[haveyoumetjeff]

If I'm on the factory DP going to an aftermarket DP will I be able to reuse the bolts and nuts or will I need new ones ? I thought the bolt was basically welded to the factory DP and cannot be used on an aftermarket DP

Thx in advance


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[silvereb80]

I have cts hfc i needed to use new hardware

[SHCKR]

Factory DP has non removable pressed studs. New DP will come with nuts and bolts

[haveyoumetjeff]

Factory DP has non removable pressed studs. New DP will come with nuts and bolts

Thought so
Only problem is the used one I bought. No hardware :/


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[FromS60toB61.8t]

Not sure if it's the same for everyone else, but my oem cat had 2 non removable studs and the 3rd one was on the up pipes. Made for a nice guide pin putting the new one in.

[ssanderson1]

Thought so
Only problem is the used one I bought. No hardware :/


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Just go to Lowe’s and pick up the hardware. M10 I believe

[Diokhan]

Thought so
Only problem is the used one I bought. No hardware :/


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You need to pick up four m8 x 30mm bolts. They have them in two packs at Home Depot for a couple dollars. The factory nuts are m8.

[brandonbanana]

You need to pick up four m8 x 30mm bolts. They have them in two packs at Home Depot for a couple dollars. The factory nuts are m8.

Thank god for this thread. I have the same issue as OP. I was just messaging CTS for a set of replacement bolts and gaskets and it came out to about $42.28 and I was about to pay for it till I saw this thread. Thank you

[ssanderson1]

You need to pick up four m8 x 30mm bolts. They have them in two packs at Home Depot for a couple dollars. The factory nuts are m8.

This man is correct. M8 is the size you need. I went with stainless from Lowe’s, but I’m sure the packs form HD would be fine too.

[SHCKR]

You can look here for an install guide:
https://www.audizine.com/forum/showt...php?p=14465082

[Gunnarrrrr]

check ebay, there’s some people selling m8 nuts that take 10mm sockets. it makes installing 100x easier, since you can’t fit a 13mm socket in there.

[East_Coast_S4]

check ebay, there’s some people selling m8 nuts that take 10mm sockets. it makes installing 100x easier, since you can’t fit a 13mm socket in there.

Exhaust Manifold nuts are definitely clutch for this install - https://www.amazon.com/Exhaust-Manif...16829174&psc=1

Or Reduced flange nut etc same thing but def get the 10mm head

[Gunnarrrrr]

For some it might seem like overkill, but I always drop the whole exhaust for this job. it takes another 15-20 minutes but makes it a breeze. if you unbolt the exhaust’s downpipes from their hangers you can pull the cat pipe out the top with the downpipes attached to get all those 6 bolts effortlessly, then slide the whole thing back down. You’ll need to remove the chassis support brace of course.

Also so you dont spend forever fishing for torque specs, I compiled them all here with diagrams for clarification:

https://www.audizine.com/forum/showthread.php?t=962404

[QuickHandCam]

For some it might seem like overkill, but I always drop the whole exhaust for this job. it takes another 15-20 minutes but makes it a breeze. if you unbolt the exhaust’s downpipes from their hangers you can pull the cat pipe out the top with the downpipes attached to get all those 6 bolts effortlessly, then slide the whole thing back down. You’ll need to remove the chassis support brace of course.

Also so you dont spend forever fishing for torque specs, I compiled them all here with diagrams for clarification:

https://www.audizine.com/forum/showthread.php?t=962404

Do you, by chance, have any pictures of that method?

Seems pretty nice...

Do you unbolt the hangers and take off the exhaust clamps of the 2 pipes going down to the mid muffler as well? How much of those pipes can come through the top?

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[Gunnarrrrr]

Do you, by chance, have any pictures of that method?

Seems pretty nice...

Do you unbolt the hangers and take off the exhaust clamps of the 2 pipes going down to the mid muffler as well? How much of those pipes can come through the top?

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Yep, those clamps come off then I unbolt and remove the lower downpipe hangers. But its only a few bolts to drop all the exhaust hangers. I just remove the rear hangers, downpipe hangers, and cross brace & hanger, and slide it back and off the downpipes. Then I unbolt the downpipes from the transmission and they’re free. I can get the cat pipe out a few more inches this way and easily access all 6 bolts. Also using an engine hoist to wrap a chain around the cat pipe helps a lot for supporting it and pulling it out. I then wrap a chain around the back of the cat pipe to pull it into the turbo so I dont need a second pair of hands to line it up while I secure the clamp. just make sure you have something soft in between the hoist and the front bumper.

Someones gonna make fun of me for what seems like a lot of effort, but jokes on you I dont have scratches allover my forearms