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So my 2003 Corolla S has been throwing a check engine light at me every two weeks or every week. The code is for bank 1 in my Cat.. I can get a brand new one for 230 bucks but i dont know if its worth it since i can just turn off the light every time it happens. i know i have to eventually...

I've been looking into buying a performance chip for my 2003 Toyota Corolla S in order to gain some HP and it says increase fuel economy as well. This would just be a pre-programmed chip that connects directly into your OBD2 port. I dont know if you have to leave it plugged in order for it to...

So I have a 2003 Toyota Corolla S 5-speed with 161k miles on it. The past owner took incredible care of this car and it still runs great (knock on wood), anyways stock it comes with 130 hp. I put a cold air intake and a magna flow exhaust on it so i probably have almost 150 i hope. I use 5w-30...