I assume you're talking about the IAC (Idle Air Control) Valve? That's right on top of the throttle body. The throttle body is in between the intercooler and intake plenum. Posting this twice seems kind of inconsiderate, if you ask me, but you need to make your questions more clear if you're going to ask about a part. The MAF (Mass Air Flow) sensor controls fuel, so I kind of assume you mean that? That's on top of the intake to the left side (looking at the front of the car it's directly after the airbox). It's held in by 2 screws and it pulls right out. We may be able to help you more if you can talk about what problem you're having and we can give you input with real names for parts. What's going on?