AEM wideband installed and ---LEAN!! - FirebirdV6.com/CamaroV6.com Message Board

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AEM wideband installed and ---LEAN!!

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  • #1

    AEM wideband installed and ---LEAN!!

    I installed my AEM wideband today and besides idle, I am in the 15.9-16.5 range??


    I am having a hard time believing this because I am running bigger injectors and whe I crank up the fuel pressure I stall at idle. I had it at 28-30 psi at idle, now its at 42 and it seems ok, any advice? Can I just keep cranking up the FPR.

    FYI I have a 3.4 with the following mods (see cardomain page)
    http://www.cardomain.com/ride/2442211/2
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  • #2
    Re: AEM wideband installed and ---LEAN!!

    Originally posted by whiteThunder
    I installed my AEM wideband today and besides idle, I am in the 15.9-16.5 range??


    I am having a hard time believing this because I am running bigger injectors and whe I crank up the fuel pressure I stall at idle. I had it at 28-30 psi at idle, now its at 42 and it seems ok, any advice? Can I just keep cranking up the FPR.

    FYI I have a 3.4 with the following mods (see cardomain page)
    http://www.cardomain.com/ride/2442211/2
    So just driving it around at regular conditions you're above 15.9 rather than around 14.7? Are you sure the guage is calibrated correctly?
    1997 silver Camaro RS<br />|T-Type Powered|<br /><a href=\"http://www.kwfbody.com\" target=\"_blank\">Looking for a local F-Body club in K/W, Ontario, Canada?</a>

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    • #3
      Re: AEM wideband installed and ---LEAN!!

      OK sounds completely silly based on the mods and knowledge you have but is your comp tuned for the bigger injectors? I mean more power going to the ground but if your comp still thinks it has the old one the duty cycle may be wrong. BTW, nice list of mods, does it run pretty strong?
      Let's flip a coin. Heads I get tail, Tails I get head.

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      • #4
        Re: AEM wideband installed and ---LEAN!!

        its a 3.4, stock computer tuned for everything but the bigger injectors because its a 3.4 and you can't because no company will. I'm going to megasquirt very soon.. one good thing is the computer by default puts it at 11.9 AF under wide open throttle!! Does anyone know what a good pressure is?

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        • #5
          Re: AEM wideband installed and ---LEAN!!

          well at idle its 10-12, but normal cruising its 15 and up as far as i know the aem doesn't need calibrating its a stand alone. Someone correct me if i'm wrong btw its the aem 30 4100

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          • #6
            Re: AEM wideband installed and ---LEAN!!

            Originally posted by whiteThunder
            well at idle its 10-12, but normal cruising its 15 and up as far as i know the aem doesn't need calibrating its a stand alone. Someone correct me if i'm wrong btw its the aem 30 4100
            I'm not familiar with that type, but i'd log yourself driving around normally with autotap or something to see your stock o2's are reading in the 14.7 range to confirm the car is running right and then you'll know if the wideband is good or not. It shouldn't be over 15 other than the odd spike at normal driving. My wideband fluctuates between 14.3 and 15.1 normally when driving around the city.
            1997 silver Camaro RS<br />|T-Type Powered|<br /><a href=\"http://www.kwfbody.com\" target=\"_blank\">Looking for a local F-Body club in K/W, Ontario, Canada?</a>

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            • #7
              Re: AEM wideband installed and ---LEAN!!

              I don't have autotap- where can i get it and does it work on the 3.4
              obd-1

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              • #8
                Re: AEM wideband installed and ---LEAN!!

                Originally posted by whiteThunder
                I don't have autotap- where can i get it and does it work on the 3.4
                obd-1
                Crap I dont' think it works on odb-I. My mistake i didn't catch that. I wonder if there's a way with a digital multimeter to measure the voltage of the o2's when the engine is hot and how that reading corelates to 14.7 afr? That's out of my league though :(
                1997 silver Camaro RS<br />|T-Type Powered|<br /><a href=\"http://www.kwfbody.com\" target=\"_blank\">Looking for a local F-Body club in K/W, Ontario, Canada?</a>

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