I am getting ready to change out pipe on my car while I have the car up for an oil change. I didn't do the last test pipe install so I'm not 100% sure how its done.

What size are the bolts?

What tools will I need?

Do I have to drop down the entire exhaust?

What is the easiest way to do this? I will be using jackstands.

I couldn't find any DIYs on just the test pipe...

 

it should be all bolt on.. very very simple... on a rating from 1-10 (10 being the hardest) i think this install would defenitely rate a 1... maybe even a 1/2
-you will need a socket wrench (i believe the sockets are either 12 or 14mm? im not quite sure)
-u dont need to drop down the exhaust
-jackstands should be fine so long as u can get underneath the car and you can get some leverage on the bolts.

 

Yep, whatever you did to take out the cat, do the reverse to get the pipe in

 

I was worried about the springs on the bolts that go onto the cat. Well, Im gonna go give it a try!

 

They don't come flying out or anything, just be sure you put em back the same way.

 

Haha funny you should ask. I just installed my test pipe today. Your not gonna have to drop the entire exhaust. I unbolted the CAT from the rear exhaust first. It relieves the tention from the front two bolts that hold the CAT to the header. Then remove the front two bolts. Tools consist of a 12mm socket and wrench. A 14mm Socket and wrench. I forgot what size the O2 sensor was. But its not too bad. You might have to bend the heat shield of the CAT on one side to get the bolt out. You'll see what I mean. One word of advice, Before you bolt the O2 sensor back in spin it in the opposite direction a couple of times so that when you screw it into the test pipe it doesnt twist the wires up and make it tight.

 

Well, the install was painless. Definitely a 1 on a 10 point scale.

The O2 sensor is a 22mm by the way. I thought I didn't have a 22mm wrench at first but I found one laying around, so everything went smoothly!

 

Glad to hear it went smoothly. The only problem I ran into when doing mine was not having any slack in the wires from the O2 sensor, which made it difficult to take out and put back in the test pipe.

But other than that minor inconvenience, probably the easist part to install in the car next to the drop-in air filter.

 

Sorry to steal the thread but while its open.... I did the "anti fouler" mod and it ran fine all day without a CEL. On my way home there it was. My CEL came on. I reset the battery and it took about 15 min for the CEL to come back on. Hmmm... They have two different size "anti foulers" One spaces the O2 sensor further back than the other. I have the smaller of the two in there. Could this be my problem? Thanks.

 

The anti-fouler trick works by removing some of the heat from the sensor. Maybe you need to add another fouler to make it a little longer.