FTO AUSTRALIA

http://www.fuelsaver.com.au/hiclone.php

This is placed just after the airfilter in the air intake and makes the airflow spiral into the engine, thereby increasing fuel economy and performance... or so say the inventors.
Waste of money or does it actually work?

All it does is add an enormous restriction to your air intake, avoid it. If you want better fuel economy and performance buy a SAFC and have it tuned

I emailed this guys ages back when I owned my Excel and asked them some questions. Now whether this can be applied to a sports car, I don't know. But basically what they said was it works better on older cars where you should get a good increase in fuel economy. I ran (and still do) 98 RON fuel and they said that it's probably not worth it because at the very most, I would get a 10% increase in fuel economy so basically for the cost, I would almost never get my money back in saved fuel.