is this thing really works?

FEATURES OF O2 OXYGEN SENSOR POWERCHIP
[ul][*]Improves engine output by as much as 10 %.[*]Enhance Nm, throttle response, acceleration and low end torque.[*]Preserves smog certification.[*]Pushes up acceleration and dynamism by upto 15 %.[*]Results higher top speed.[*]Long duration - 10 years warranty.[*]Easy universal 10 minutes installation.[*]Switch can be connected in line for perfect test.[*]Immediate effect even during driving, no ECU learning period.[*]Reduces flat spots or delay time when you mash down the throttle.[/ul]


you can find more information...
http://www.autodirectsave.com/prod/T...nce_CHIP/17964#

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No

 

I really doubt their claim...