DIY: B5 S4 - Removing DP's to make Piggies (For 6spd)

[torment]

Ended up cutting a window in the cat and taking it out that way....that was way more tedious than expected...

[gointoscott]

Yeah, I got mine at advance auto parts. They were in the "HELP" section out on the floor, two to a pack. They were the same size as the O2 socket if I recall.

Well to update the progress, I finished cleaning out the other cat, so now I just need to polish the inside of both so they are nice and clean. They look good now, but just want to make sure and get every last piece of particle so nothing is floating around freely in there. I tried a wire brush, but it just isnt working, I need to get some brush on a long drill bit or something so I can reach up in there.

Also I updated the DIY. I made a mistake on one of the tools. You need 5mm and 6mm allen sockets, not torx that was my bad.

Also MHolme, you are a genius. I went to advanced auto, looked in the help section and got those exact sparkplug defoulers you got, bought 4 so I will use 2 per side. I guess you did this to make sure it doesnt throw a code, and makes sense to me too. Anyway total cost $8.38 Not $29.95 a piece like vast sells for. for total of 60 bucks plus shipping I would imagine!!! Talk about highway robbery!!!

[gointoscott]

Bump. I finally finished the instructions. Added more pic's too.

[RebelS4]

Just finished putting the last axel guard back on...big thanks for the write-up man, have been planing on doing it for a while but couldnt muster up the balls to dive in to it. But after looking at this thread I decided to give it a try. Had 4 days off so figured I wouldnt be rushed, hit some snags but went by pretty smooth thanks to the DIY and all pics. Spoooool!

[Slow4]

Congrats Scott on a job well done.

Next task for you:

Darintake Project on a lazy sunday afternoon.

[gointoscott]

Congrats Scott on a job well done.

Next task for you:

Darintake Project on a lazy sunday afternoon.

lol

Don't know if I can handle the Darintake project. JK

Yep I'll def have to do that soon!

[Knight_Rider]

super ill write-up guy!

MUUUUUCH RESPECT!!!

that is what is up!

[highPSI-S4]

I would have to agree, nice write-up. Just a question, i was wondering since you are still on stock catback exhaust have you heard a change in exhaust note? and is the power more noticeable? I know these are dumb questions but someone has to ask them.

[Slow4]

I would have to agree, nice write-up. Just a question, i was wondering since you are still on stock catback exhaust have you heard a change in exhaust note? and is the power more noticeable? I know these are dumb questions but someone has to ask them.

I'll let Scott do the honor of telling you but from what he told me, theres IS a more noticeable gurgle to the exhaust note...as for the noticeable power...he can tell you

[highPSI-S4]

I meen i know there's a difference just wanted to hear comments on it, as i went from stage1 to stage2+ so i never got to feel the seperate differences in the 2.

[Slow4]

I meen i know there's a difference just wanted to hear comments on it, as i went from stage1 to stage2+ so i never got to feel the seperate differences in the 2.

You should do what Aaron did for the GTG back a few weeks back...put in the SSAC DPs and go deaf! LoL!

[gointoscott]

I would have to agree, nice write-up. Just a question, i was wondering since you are still on stock catback exhaust have you heard a change in exhaust note? and is the power more noticeable? I know these are dumb questions but someone has to ask them.

Yes I can hear a difference in the exhaust tone. It gives it a little more of a rumble. Nothing huge by any means, but you can tell the difference.

As to the power, I wouldnt exactly say its a night and day difference, but it does pull a little stronger and doesnt feel as restrictive. If I were smart I would of did some runs before and then after and timed them that way I could see get some numbers. But I didnt think of it at the time.

I think its well worth it though.

[gointoscott]

Well...

Its been a week since the piggie install, I have to say that each time I drive my car I get a bigger smile on my face


It pulls stronger and I love it!

[gointoscott]

Bump

I wish we could move this to the tech section.

[abasichapman]

Please correct me if I'm wrong but I think the non-foulers are the 18mm. Just so when you go to the parts store you don't look like I did.

[gointoscott]

I didnt mean to mislead anyone. The pic I have posted is the ones I got and worked. I dont remember off the top of my head what the actual size was, I thought I posted it right. But I could of typed it wrong.

[abasichapman]

No problem at all. We figured it out. Great write up anyway.

[Ianxcom]

I need to change my front driver side o2 sensor and I was just looking in my engine bay. Do I need to remove the heat shield to get to it or am I just not seeing it?

[gointoscott]

I just put new front 02's in last night. The drivers side is a little harder to get to but you do not need to remove heat shield, or do anythign with it for that matter. You do need to move the plastic radiator overfill tank (3 screws) and swing it out of the way.

What I did is moved the tank out of the way, then you can get down by the drivers side 02 with the socket from there and put it over the 02 with your fingers.

Then take some long extensions and reach it from behind the Y pipe. I did both in about 45 minutes so you shouldnt have much of a problem.

It is hard to see, but there are 3 black hoses down behind the engine look behind/under them and you should see it. It plugs to a connection on the firewall on the drivers side. If you cant find it follow the wire down and it will lead you to it.

[Cown3d]

awesome write-up
will def be one of my first projects

[s2000_s4_525]

Wish i had this befor i paid vast. THANK YOU sticky this sh*t ASAP

[Ianxcom]

Ok i finally found it. Looks like a b*tch to get out. I need to go buy an o2 sensor socket now.

[Coors]

I am just going to throw this out there. If anyone plans to do this themselves, I'm going to let you in on a little secret.

That "stuff" your drilling out of the pre-cats is considered a HIGHLY VALUABLE, PRECIOUS METAL.

I know people who will pay you top dollar for your "stuff".

A friend of mine designs and analyzes emission catalysts and their precious metal properties, manily for industrial applications, but for automotive platforms as well.

http://www.environex.com/catalyst_development.htm

If your looking to sell your scrap, I may be able to help you get some cash.

PM ME for more details

He offered to buy my "scrap" Let me see if hes interested in yours

[Sobegod00]

Hmm, I was just looking at the VAST piggies when I stumbled upon this post. Will have to consider doing this. I also noticed your local so I know who to call if I need some assistance or tool in the project.

[Stone825]

What is the difference between both of the non-foulers. Is one set longer than the other set?

[Coors]

the shorter defouler goes into cat, then longer defouler into the shorter defouler (hope that doesnt confuse you)
Reason for this is you need to screw the O2 into the longer defouler. because the other one is too short and wont reach the threads of the 02.

hope this helps...

You plan on doing this yourself, Stone?

[gointoscott]

Hmm, I was just looking at the VAST piggies when I stumbled upon this post. Will have to consider doing this. I also noticed your local so I know who to call if I need some assistance or tool in the project.

Sure. Shoot me a PM when you do it or have any questions. Why pay for them wen you can do them yourself, its fun wrenching on the car too. Well at least when its going good.

[Ianxcom]

So is your car running ok with the cel eliminators? I has planning onm doing that for awhile.

[gointoscott]

I have not had any codes for my rear o2 's at all. So the defoulers work great.

[Ianxcom]

How in the butthole do you get at that damn driver side o2 sensor. Too many damn hoses in the way.

[mholme]

How in the butthole do you get at that damn driver side o2 sensor. Too many damn hoses in the way.

What hose is in the way? Take it off? It's not THAT bad with extensions and crows foot.

[gointoscott]

This is what I did:
1. remove the accordian hose for intake for passenger side.
2. Then move the coolant overfill tank out of the way on the drivers side.
3. I would then go down on drivers side under the master cylinder with the 02 socket and place it on the 02 with your fingers - Be sure and leave the part where the extension plugs into towards the front of the car so you can put your extension in the slot.
4. now move to passenger side with your extensions and fish the extensions down at an angle towards the 02 socket. (What I did is squeezed the extensions between the two thick hoses that run behind the motor) and then fit the extensions in the slot for the 02.
5. Put your ratchet on the extensions, then find a big pipe to fit over the ratchet.
6. now use those muscles of yours and it should break free then after its loose you can screw them off with your fingers. Just make sure you have the socket on there correct so you dont round the edges.

Done.

[Ianxcom]

Thanks ill try that. Seems simple now that you walked me through it. My dumbass was trying to fish the whole socket through those damn hoses, then the socket fell off, etc... sigh.


Thanks again.

[AB18]

Just a little tip, much sure you don't put to much torque on the driver side 02s when your tightening them. Don't ask me how, but i stripped the drivers side and had a heck of time tapping it and getting another in.

[gointoscott]

Yeah I hear you. I keep telling myself to think outside the box. Helps you from being one dimentional.

[Ianxcom]

Yeah I hear you. I keep telling myself to think outside the box. Helps you from being one dimentional.

So your way worked brilliantly. I did however break a plastic T-piece that connects the coolant overflow to the other coolant lines and had to goto audi to get it. All in all i wasnt as bad as I made it out to be.

Thanks again.

[mholme]

So your way worked brilliantly. I did however break a plastic T-piece that connects the coolant overflow to the other coolant lines and had to goto audi to get it. All in all i wasnt as bad as I made it out to be.

Thanks again.

I broke the same fitting. Just went to advance auto for a generic one.

[Ianxcom]

They have generic ones? Damnit. Audi bent me over and charged me 11.50

[mholme]

They have generic ones? Damnit. Audi bent me over and charged me 11.50

The 3 way tee, right? Yeah, generic.

[gointoscott]

Yeah somone a week ago or so said a shop told them they had to take the DP's off to change the front 02's? or was going to charge them an arm a leg and a left nut.

I coudlnt believe it. Its really not that hard of a job. Glad you were able to get them changed