http://www.fuelstar.com/
just found a guy selling one of these on trademe (at twice what the supplier asks!!!)
went to the site and it claims 6% immediate performance increase with up to another 6-9% after 5000km - to total of more than 10% just from a fuel catalyst.
Also better econonmy of about 15%+
Not a bad deal for $30+pp, could be an option for those of us with the higher spec 250's to get that little bit 'extra'
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