Power loss when hot!

  1. L-plater Joined: Jun 2012 derby Posts: 34 saxo 1.1 (gone now) Saxo furio 1.4 (2001 YReg)
    #1
    As title... When it's hot my car looses so much power and uphill it's so noticeable takes the thrill from driving needs sorting


    Sent from my iPhone using Tapatalk
  2. Saxperience Post Whore Joined: Nov 2010 Kent Posts: 8439 Gen 7 Celica 190.
    #2
    Sort it then
  3. Established Member Joined: Jan 2013 Portsmouth Posts: 1335 1997 Mk1 VTS
    #3
    Cars generally slow down when going uphill, unless your in a cammed vts of course
  4. Established Member Joined: Jan 2012 Cambridgeshire, England Posts: 2180 Saxo 1.1, Fiesta Zetec S
    #4
    Maybe you're running low on NOS y0
  5. Saxperience Post Whore Joined: Mar 2003 United Kingdom (England) Posts: 7064
    #5
    Open airfilter????
  6. L-plater Joined: Jun 2012 derby Posts: 34 saxo 1.1 (gone now) Saxo furio 1.4 (2001 YReg)
    #6
    Well i guess you gotta drive it to understand and yeah crappy open air although I watch a vid of these guys doing doing tests on different types of filter and there was no difference :o


    Sent from my iPhone using Tapatalk
  7. Established Member Joined: Jan 2013 Portsmouth Posts: 1335 1997 Mk1 VTS
    #7
    Most of the time a shit open cone air filter decreases power due to heat soak
  8. Super Moderator Joined: Nov 2009 Cambridge(ish), UK. Posts: 10581 BMW 5x M50d.
    #8
    Quote:
    Originally Posted by Jigs2895 View Post
    Most of the time a shit open cone air filter decreases power due to heat soak
    This.

    Hot air is less dense and contains less oxygen to burn. The cooler the intake air the more power the engine can make.

    If you run an open cone filter, and put it (say) 12" from your 650+ degree C exhaust, it's going to do nothing except suck up HOT air...

    Refit the standard airbox (and pipework), fit a performance panel filter, and you'll notice the difference - especially in warmer weather.