Auto Parts: 99 Dodge NeonDOHC, rich fuel mixture, hydrogen generators

Question
hi Mike
how are you
my name is Gabi i got 99 Dodge Neon DOHC
I'm thinking to install this mod:
http://cgi.ebay.com/ebaymotors/20HP-Performance-Speed-Chip-Dodge-Neon-93-98-99-0...

can you tell me What do you think about that and will it harm the car any possible way and will it really improve the performance as said i mean will i feel the difference if installed
Thanks and regards
sincerely

G.Koussa

Answer
    I would not recommend it, and I'll tell you why.  All it does is fool the computer in your car into distributing an over-rich fuel mixture.  It does this by making the computer believe that the air temp is colder than it is.  I have also seen this done with the coolant temp sensor.  The richer mixture makes more power, that's why top-fuel dragsters use 10 gallons in one run.  Thing is, your computer was designed to perform very complex calculations many times a second to keep your car running exactly right.  If you feed it the wrong data, even from just one sensor, it will not be able to perform the calculations correctly under ANY operating condition, much less at full throttle.  You will use more gas, and you will probably foul the plugs early.  In addition, you may burn out the Oxygen sensor and even plug up the Catalytic converter.  There are lots of people selling stuff on ebay, myself included, but the guys selling these things are scam artists, right along with those idiotic hydrogen generators.  Please don't waste your money.