i been thinkin bout gettin megan headers problem with that (or what i heard) is that it will throw a cel and i just wanted to know if i turned the cel off by disconnecting the neg battery cable (like i had to do with my cai) so my computer could get used to the change in pressure????

It's not the pressure causing the CEL, its your secondary o2 sensor reading too rich, due to your lack of a catalytic converter. If you reset the CEL, it will come back. Search ANTIFOULER in the tC Drivetrain and power section and you will find a solution

http://www.scionlife.com/forums/viewtopic.php?t=175210&postdays=0&postorder=asc&&start=0

buy one of these from inlikeflint and i GUARANTEE it will get rid of your cel. It got rid of mine when my car was turbo. If he's not still selling them, I've still got one, it just needs to be taken off.

and how does it help it really didnt have an explanation since its the o2 sensor how does that part make it not there? i just want a reason to buy the headers if it takes extra stuff i think ill skip them and buy a chip

It spaces the o2 sensor away from the main exhaust stream, letting only a small amount of the gasses be seen by the o2 sensor. Those chips you speak of are generally a pack of resistors and dont do much at all, save your money.

huh thats good to know how much for urs??? ill buy it asap cuz im in tx were the emissions tests wont let u pass with a cel so i need it to get the headers and u said it works good right so let me know and ill see if i can get it

and will it work with megan headers??? or just invidia?