have any of you seen these products on tv or in magazines?
http://www.spiralmax.com
http://www.tornadoair.com
do you think that products such as these can TRULY provide better fuel economy and/or add hp? or is it all a bunch of poo?
http://www.spiralmax.com
http://www.tornadoair.com
do you think that products such as these can TRULY provide better fuel economy and/or add hp? or is it all a bunch of poo?
