air intake question

Can anyone tell me where my Inlet Air Temprature sensor is? is it the one closest to the air filter housing?

Its in the acordian looking tubing going to your throttle body. There are 2 things plugged into that thing. 1 is a tube running from your back valve cover and the other is your IAT. The IAT is the one with the wires coming from it. It's a bitch to pull out.

has anyone seen or tried those resistors you plug into your airintake to fool the cpu into thinking it's a certain temprature out so you can gain some horsepower? if so how much horsepower? also what"s a good muffler to get installed on my 99alero to maike sound good and give me some power?

Do do it. The only difference you'll notice is you gas gauge going down faster. Most people I've talked to like the 40 series Flowmaster or a Magnaflow muffler. If your looking for a catback system then Borla and SLP makes them. I have a SLP catback on my car and absolutly love it wouldn't trade it for the world.