Performance chips (I've learned the hard way) don't really work. This is the third I've tried and from three different companies. None of them performed as advertised. The only consistent change was erratic throttle response from all three. I can't imagine the interface with the OEM computers is healthy for the electronic well being of the car. I ended up putting a cold air intake on (from a reputable company who specializes in cold air intakes) and new stainless dual exhaust. I definitely noticed a performance change immediately with both individually. Performance chips expensive or inexpensive seem to provide nothing more than time you'll never get back after buying, installing and realizing they do no more than override a perfectly functioning throttle response program from the OEM computer. I can't recommend this chip or any other from any company.
That's a matter of opinion not matter of fact. Performance chips are effective, they do work, your experience is not everybody else's experience. We have many happy customers since 2007. If you believe dual exhaust give you any performance, good for you, most mechanics say dual exhaust give you zero performance gains.