they have been taken to court for making false advertising claims,and lost

http://www.asa.org.uk/adjudications/show_adjudication.asp?adjudication_id=37807

It will be interesting to see how they get around this adjudication.

'Does not significantly affect your performance?'

'As tested by the highly respected Warren Springs Laboratories'

'This advert has been subjected to full scrutiny by the Advertising Standards Authority'

'Works on fresh clean air going straight to the heart of your engine!!'

The ASA do a great job I have taken action through them before and the are very fair and thorough. Power to their elbow!

Well its often said that if its too good to be true then it might not be true.

Vince