I saw chips for optimas listed on ebay.  I did a search for chip tuning info
on the web found that mod chips (like those found on ebay) do nothing but
make the engine run richer.  This increases the amount of pollutants coming
out of the exhaust, makes the exhaust smell bad, and kills your gas mileage.

Someone once said "you can't go to the moon in a chrysler."  Based on that,
just my opinion, but if you want a faster ride, save your pennies, and next
time, by a faster ride.