Ok i just recieved my AW header...now the question i have is should i install it right away or should i wait til i order my S-pipe and install them together at the same time... i got some info but more opinions are aprreciated THanks

do you want to install 1 pipe, wait a week and install another pipe or wait a week and install 2 pipes.

it doesnt exactly seem like an overly complicated install (i.e. unbolt, unbolt, take off o2, swap, bolt bolt)

yeah im having the same difficulties. im not sure whether or not to wait for the s pipe. would I have to take the header off to install the s pipe? or can i come from the back? which way would be easier?

No you dont have to take the header off. The s-pipe install isnt difficult at all. Its 4 bolts and the 02 sensor. Just make sure you pick up a new donut gasket at the dealership tho for when u put on the header. Just ask them for the gasket that goes between the exhaust manifold and the s-pipe. You can find it in the Parts fiche here on scion life and get the part # to make it easier. As far as waiting till you get an s-pipe. It depends on how far apart you are ordering them. If its a week i would wait but a month, i dont think i could wait that long. Installing the header with or without the new s-pipe at the same time isnt going to affect the install. Up to u.

alright thanks guys i think im gonna go ahead and install the AW headers then i can jsut wait for the other stufff and do it later.... so i was just looknig at the headers i recieved today and it has a Sensor hole on it...and i remmber hearing that the sensor is on the s-pipe ..so im jsut a lil confused.... thanks

what is the best anti-fouler? or are the all the same? J/K becasue im in the same boat, and want to wait to install everything at one time.

what is the best anti-fouler? or are the all the same? J/K becasue im in the same boat, and want to wait to install everything at one time.

be careful on that 02 sensor, make sure engine is cooled down --> WD-40 that b!tch too. Use a new exhaust manifold gasket theyre about $35 if i remember...you dont really need new pipe gaskets but up to you. GL!

There are 2 sensors. The Air/Fuel sensor in the header and the O2 sensor in the s-pipe. Spray some good penetrating oil on the one in the exhaust manifold for a few days before you attempt to remove it. Mine seemed to be cross threaded from the factory and when i tried to remove it all of the threads were stripped out and i had to buy a new one. It cost $230. Best non-foulers are help! brand and they are 18mm size

if i have the dealership install the headers will they automatically put a new gasket on or will I have to tell them?

so let me get this straight, you dont need to remove the A/F sensor? you only replace the 02 sensor?

im lost

You need to remove one sensor when installing a header and one sensor when installing an s-pipe.

When installing the header, you will need to take the sensor out of the stock header and put it in the new header The aftermarket headers have a hole for it to be screwed into. Same thing with the s-pipe. There is a sensor screwed into it as well and that needs to be installed into the new s-pipe.

The dealership might not put a new gasket on there. I would tell them to just incase. and they are going to charge you about $35 just for the gasket.

Check my post about stripping the sensor from a while back:
http://www.scionlife.com/forums/viewtopic.php?t=97063&highlight=

The Air/fuel sensor in the header is the only one of the 2 sensors that people have had problems with getting out. When removing the one on the s-pipe the penetrating oil is not as important. Its still reccomended though. Mine came out of the s-pipe just like a regular bolt. No struggle at all. Just a little WD-40.

so the "help" brand anti foulers are universal, i just need to get the 18mm?

yeah, 18mm

You can search and find a how to on the non-foulers/anti-foulers. Using Non foulers are not scion specific either. You can search on yahoo and google too.