Header information?, Update! Please advise! Options

[celicakitten]

***Update-6-29***

I need to buy a new header, my oem is horribly cracked w/a half-assed weld job, and the heat shield is cracked and missing half the bolts. I've searched the site and found that most of you have bought the ebay aftermarket header(typically for the corolla), and have to do some modifications to make it fit(i.e. welding an extra piece of pipe, making a second bung hole for the second o2 sensor). That's all fine with me if I absolutely have to, but was wondering if anyone has purchased the one from M2 Performance: http://www.m2performance.net/product/produ...?productid=5932 Supposedly it's just for the Celica, or are there still mods as mentioned above? I'm not sure I even have the second o2 sensor as I have not been able to get under my car yet, and I have only an all stock 1.8 ST engine. Ideally I'd still like to be able to pass emissions though, so I don't know if this modification is worth the hassle if I can't pass emissions without a stock header. Thanks for any info you guys can share!

This post has been edited by celicakitten: Jun 29, 2012 - 4:52 PM

[trdproven]

the 2nd bung is usually for the Cali Spec Celicas because there is an upper and lower catalytic. On non-cali spec its only on the header so once you change to aftermarket header you have no catalytic at all left. but like my header, there is an O2 sensor hole for it and there is a 2nd fitting just below it, but i don't need it for this 5sfe. never heard of 5sfe header needing mods besides if its cali spec or for another 5sfe.

This post has been edited by trdproven: Jun 26, 2012 - 10:34 PM