From another forum:

I would venture to say that I was very skeptical but the theory is sound with
these things. This resistor, or whatever you want to call it, causes the
computer to think that it is 56 degrees (ideal air temp for most engines)
producing a change in the fuel to air ratio. Which results in either a richer or
leaner mixture, whichever is best for performance but not necessarily fuel
economy.

Im not sure that's a "sound" theory as you'll be running either rich or lean and
too much each way is a bad thing...


They also sell (magnumtuning.com wooho) a o2 sensor + unit so you don't even
have to splice it in.

And they sell a "chip tune" that allows you to cut your ECU wires & have "check
engine" light on...

Buy one & let us know. ;-)



On Tue, 24 Jan 2006 13:20:30 -0800, Cameron Starr >
wrote:

>http://cgi.ebay.com/ebaymotors/ws/eB...tem=4607434334
>
>Their english isn't great; but I'm curious how they can claim those #'s with
>just altering the o2 signal -- and "maintain smog certification".
>
>I pinged a few people that bought them, but they all had honda's etc.. but they
>swore it made a huge difference...
>
>What kind of signal modification could it possibly make?
>


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