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I looked at the eBay feedback for a guy selling chips cheap and it turns out that they are just 3300 ohm resisters that you put in place of the IAT to tell your engine that the air is always cold. I don't want to bother with that.
What got me first looking at this was a guy at work telling me that my 89 Grand Prix came from the factory with a changeable chip to tell it how much gas to inject, what points to shift, and when to spark and that they set it up from the factory in the middle between what would give highest horse power and what would use the least gas and that by changing this chip I could turn it toward economy. But I'm not finding those for sale anywhere. Maybe just because it is a 20-year-old car?
He also said my 97 Mustang could be reprogrammed the same way through the OBD2 port, but the local Ford dealership won't participate. I don't know where to get this done and I'm really wondering if it is worth keeping on looking around.
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