Celica Forums General Discussion Engine and Performance My Celica gts iac issue

So I’ve replaced my idle air control on my gts as it was showing the p0505 code but even after that and resetting the code it came back now I’m not sure what it could be a friend of mine who is a mechanic believes that it may be my cold air intake if anyone knows what this may be I’d appreciate the help

Without knowing more, I would say check for vacuum leaks, check the PCV valve, clean your throttle body, and if it really comes down to it, consider putting your stock air box back on and see if that fixes the issue. Good luck.