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Weather change and tunning

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  • Weather change and tunning

    You guys ever notice that your A/F ratio might be off due to weather change? Mine is usually running rich once it warms up by .5 , basically ill have it set for winter with 12.5 A/F and once it warms up its at 12.0 or richer, so I just had to adjust my tune. When I lived in Phoenix I had to adjust it a bit but I could leave it if I wanted because the weather didn't change too much, but living in the high country you definitely need a winter and summer tune.
    08' L76 6.0L 4X4 Chevy EXT.Cab LTZ Vortec MAX with Snug top cover, Dynomax exhaust,Hptuners& K&N intake
    96' Camaro M5 to A4 conversion, alot of mods ,see Homepage. GT35R Turbo http://www.cardomain.com/ride/244123...vrolet-camaro/

  • #2
    All the time - it is worse if you are tuned without a MAF. The changes become more drastic as the MAF isn't there to compensate. Usually I would have 3 tunes - one for spring, one for the dead heat of summer and one for fall. I would usually just take my good tune, run 2-3 logs and makes the adjustment with hp tuners. By the 2nd - 3rd change I was pretty bang on with the tune again.

    2002 SOM Z28 Camaro
    1996 3800 camaro- Gone - still the fastest N/A Canadian 3.8L F-body
    V6 best: 13.43 @ 100.77 mph


    My Current Build | Synthetic Oil | Videos

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    • #3
      I always thought the computer does the adjustment. Does HP tuner change the settings to be more permanent.

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      • #4
        Originally posted by 2.8 Bird View Post
        I always thought the computer does the adjustment. Does HP tuner change the settings to be more permanent.
        Computer only does so much, usually stock is way rich, need a wideband and Hptuners to dial it in.
        08' L76 6.0L 4X4 Chevy EXT.Cab LTZ Vortec MAX with Snug top cover, Dynomax exhaust,Hptuners& K&N intake
        96' Camaro M5 to A4 conversion, alot of mods ,see Homepage. GT35R Turbo http://www.cardomain.com/ride/244123...vrolet-camaro/

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        • #5
          Originally posted by 2.8 Bird View Post
          I always thought the computer does the adjustment. Does HP tuner change the settings to be more permanent.
          Hp tuners recalibrates the settings. Then the computer adjusts from the new calibration. There is only so much accurate adjustment the computer can make though which is even less if you do not have a MAF on our cars.

          2002 SOM Z28 Camaro
          1996 3800 camaro- Gone - still the fastest N/A Canadian 3.8L F-body
          V6 best: 13.43 @ 100.77 mph


          My Current Build | Synthetic Oil | Videos

          Comment

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