Congrats man! GTS are sexy!! I wouldn't do much tunning on the 5sfe. That engine is not worth the money you put into it. If you wanna hop up the celica, do suspension first. I would suggest a 3sgte or 3sge better. Not trying to veer you away from TR but you probably have a lot of questions IE your HID kit. Check out the haven for older celicas. CelicaTech - powered by vBulletin When you register for the forums put down GT4SOM as your referrer . Do a search on there, you'll pretty much find everything your looking for. That board is really 5th gen related. Plenty of guys running 3sgtes on there including me