It IS a con game. There is no "chip" inside those, it's simply a resistor that costs about 30 cents at Radio Shack, or about 2 cents when purchased in high volume. I'm an electrical engineer with nearly 30 years' experience, IC is right, it's simply an offset to the output voltage of the IAT and they are throwing the air/fuel mix off. The computer will compensate automatically. Total waste of money, sorry, but you have been taken.
On top of it all, I looked up my cars, which do not have an IAT, and it still shows a product offering that cannot be connected anywhere.
And here is when you find out that it isn't offered for your car - AFTER they harvest your name and address (I won't put mine in), then they tell you it doesn't fit your car. Then they sell off your contact info to someone else.
Year and Body Style:
(Please specify engine configuration in step 2 of checkout after clicking buy now which is after you input name/address which is step 1 of checkout)
There is NO legitimate reason to make you give your contact info BEFORE you enter the engine configuration. You should not have to enter the checkout function first. These guys are running a huge scam. They're going to make money off your contact info, even if you don't buy a single thing from them.