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    #1

    Altering ACT

    by moving the act to air box dose this trick your EEC and hurts your engine
    Tags: None
    #2
    Most likely wont work that well unless you have it tuned.
    Scars are tatoos of the fearless

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      #3
      It might make it run slightly richer, but it doesn't have any big effect.
      86 Lincoln Town Car (Galactica).
      5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

      91 Lincoln Mark VII LSC grandpa spec white and cranberry

      1984 Lincoln Continental TurboDiesel - rolls coal

      Originally posted by phayzer5
      I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

      Comment

        #4
        FN 825B - ACT will increase the engine idle rpm after about 192F, maxing out at 64rpm by 208F
        FN 220 - EGR Multiplier is 0 until 58F, maxes out at 1 by 60F
        FN 126 - Spark advance starts to retard at 160F maxing out at -2* by 190F
        FN 135 - WOT spark advance is retarded starting at 150F, maxing out at -6* by 240F
        FN 300 - Open Loop Fuel Multiplier is unaffected by ACT (always 1)
        SCALAR - ACT MUST be between 100F and 200F for the Adaptive Strategy to start learning

        In the A9L Calibration
        FN 825B - ACT will increase the engine rpm by 48rpm at 200F, and a max of 72rpm at 226F
        EGR Multiplier is .8 until 0F, then rises to a max of 1 by 56F
        FN 126 - Spark advance starts to retard at 160F maxing out at -2* at 190F
        FN 135 - WOT spark advance is retarded starting at 150F, maxing out at -6* by 240F
        FN 300 - Open Loop Fuel Multiplier is .64 until -40F, .81 by 0F, and maxes out at 1 by 76F
        SCALAR - ACT MUST be between 100F and 200F for the Adaptive Strategy to start learning

        So what does this mean?
        Idle speed – Obviously for both calibrations the affect is going to be minimal, assuming all other idle contributors are working properly. Moving the ACT to a cooler location should not have a major impact on idle speed.

        EGR – Moving the ACT to a cooler location will affect the function of the EGR. It would not be recommended to try and pass an emissions test with the ACT in the airbox on a cold day (below 60F).

        Spark – The Spark Advance is RETARDED with higher temps. Moving the ACT to the airbox can help to keep ignition timing higher. However, keep in mind that Ford used the ACT as a ‘Safety Factor’ for preventing high temp detonation. False information to the EEC-IV will make detonation more likely when the engine is warm/hot.

        Fuel Multiplier – The Fuel Multiplier increases with higher ACT temps. Due to the low temps at which the ACT will impact the Fuel Multiplier this is not likely to cause an issue.

        Adaptive Strategy – This may be the most critical one for most daily driver Mustangs. Not allowing the Adaptive Control to function (because the ACT never sees 100F in the airbox), could hurt fuel economy and could cause drivability issues.

        our computers expect the atc to measure air from the intake manifold not from the air box just like the fox.
        Give a man a fish and he will be fed for a day. Teach a man to fish and he will promptly forget that he once did not know, and proceed to call anyone who asks, a n00b and flame them on the boards for being stupid.

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          #5
          cld,

          That is the greatest explanation, of the ACT function that I've ever seen, You really know the EEC !!!!



          87 Ford LTD Crown Victoria Country Squire Station Wagon. 4.10's, Repacked Trac Loc, Boxed LCA's, Explorer Intake, 65mm T-body, 'Stang Cam, 'Stang Air tube, K&N, GT-40X Heads, 1" Spacer, 1 5/8 BBK's, 2.5" Pypes X-pipe w/high flow cats, Single Chamber Thunderbolts, B&M 'vertor, Po-lice Swaybars.

          91 Mercury Grand Marquis Colony Park Station Wagon. K-Code, 4.10's, Repacked Trac Loc, MK VII LSC Engine, 'Stang Upper Intake, Stang Air Tube, K&N, 65 mm T-Body, 'Stang Headers, 'Stang Cat Pipe,'Stang Torque Convertor, 2 Chamber Thunderbolts.

          Comment

            #6
            Originally posted by mitymerc View Post
            cld,

            That is the greatest explanation, of the ACT function that I've ever seen, You really know the EEC !!!!


            wish i could take credit for it, only going by what i researched.

            thanks though
            Give a man a fish and he will be fed for a day. Teach a man to fish and he will promptly forget that he once did not know, and proceed to call anyone who asks, a n00b and flame them on the boards for being stupid.

            Comment

              #7
              Question, what would be the significance of relocating the ACT?

              Comment

                #8
                Originally posted by 86VickyLX View Post
                Question, what would be the significance of relocating the ACT?
                some people need to look into relocating the act because 94/95 lower intakes along with some gt40's and cobra's dont have a boss for an act sensor.
                Last edited by cld783; 12-24-2008, 01:14 AM.
                Give a man a fish and he will be fed for a day. Teach a man to fish and he will promptly forget that he once did not know, and proceed to call anyone who asks, a n00b and flame them on the boards for being stupid.

                Comment

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