A question about non standard air filters

1. user_33743 Regular Poster Joined: May 2009 Crowle, btwn Scunthorpe/Doncaster Posts: 353 'S' plate Saxo VTR

   #1 28th May 2009, 21:05

   I've checked the FAQ's and cannot find what I'm after. I want to know if an upgraded air filter (e.g. K&N) will help improve mpg if the car is driven sensibly? My hypothesis is that if engine is getting "better" air, the car will operate more efficiently by having better combustion. Therefore, operating more effectively and more fuel efficient.
   Does that make sense?
2. craig180p Yorkshire Joined: Dec 2005 West Yorkshire Posts: 31079 1989 Golf GTi Clipper

   #2 28th May 2009, 21:06

   In theory yes, but not as much as de-catting.
   
   To be fair the difference will be negligable
3. coleman258 Established Member Joined: Nov 2008 Eastbourne Posts: 2474 Astra van daily Black Saxo VTR 16v'd kent PT51

   #3 28th May 2009, 21:06

   more air = more petrol burnt
4. Sparco_Tom Saxperience Addict Joined: Jan 2007 Aylesbury, Bucks Posts: 12836 Yeaaahh Fiesta

   #4 28th May 2009, 21:07

   no it wont basically more air = more fuel required to keep the ratio. also the heat soak will result in a loss of performance. (hot air entering the cylinders) so loss in performance means engine isnt work at its most eficient therfore burning more fuel
5. Quick Saxperience Post Whore Joined: Mar 2003 United Kingdom (England) Posts: 7064

   #5 28th May 2009, 22:19

   Could mean a replacement element?
   
   Better filtration - engine doesn't have to suck as hard?
6. user_33743 Regular Poster Joined: May 2009 Crowle, btwn Scunthorpe/Doncaster Posts: 353 'S' plate Saxo VTR

   #6 29th May 2009, 04:57

   Thanks for the replies guys. I was referring to a replacement element, not an induction kit or an exposed cone type.
   
   My line of thinking was along Quicks last sentence.