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  • got problems

    went for drive , under boost it breaks up, i would not call it a missfire feels more like 2step
    ck datalogs out of 5 datalogs 1 shows 5 random rpm spikes 8 to 11000 rpm
    it`s still rich10-1 is this some of my problem?
    tried to reset switches for vr but megatune shows no rpm?
    wtf?
    sigpichttp://projectstang.blogspot.com/

  • #2

    Re: got problems

    Re: got problems

    went for drive , under boost it breaks up, i would not call it a missfire feels more like 2step
    ck datalogs out of 5 datalogs 1 shows 5 random rpm spikes 8 to 11000 rpm
    it`s still rich10-1 is this some of my problem?
    tried to reset switches for vr but megatune shows no rpm?
    wtf?
    gee, these come in threes lately

    OK, so we just went through this on Bill and Brian's cars. Both ended up with different issues. If you can email me a datalog, would help, but I am going to guess that this will help:

    First, try using "Opto-In" for your tach input. Your sensor is oriented the same as Brians, and he was able to get around the strange RPm limit by running Opto-In, and just letting "Tach In" hang free (not grounded, not powered). DIP switches 1-1, 1-6.


    Try that first.


    If that doesn't work, you might have a lot of voltage spikes, like Bill did, the next step is to use VR input. But to do that, takes some adjustments under the lid:

    R21 and R28 are labelled potentiometers on the circuit board. They adjust the hysterisis, and "zero crossing" of the VR input.
    -turn R21 1.5 turns to the right
    -turn R28 2.0-2.5 turns to the right
    -set DIP switches 1-1, 1-4, 1-7 on(down)
    -use TachIn as your "Crank Sensor input"
    -play with grounding, or not, the "Opto-In"


    one of these will likely fix it, there's something about these newer "replacement" crank sensors that's been eluding us.

    -Scott
    www.realtuners.com - catch the RealTuners Radio Podcast on Youtube, Facebook, iTunes, and anywhere else podcasts are distributed!

    Comment


    • #3

      Re: got problems

      Re: got problems

      First, try using "Opto-In" for your tach input. Your sensor is oriented the same as Brians, and he was able to get around the strange RPm limit by running Opto-In, and just letting "Tach In" hang free (not grounded, not powered). DIP switches 1-1, 1-6.
      i don`t under stand the switchsettings1-1 is for map
      switch settings 1-6 enables vr
      i tried
      1on
      2on then 2offwith 3on and 7on?
      sigpichttp://projectstang.blogspot.com/

      Comment


      • #4

        Re: got problems

        Re: got problems

        First, try using "Opto-In" for your tach input. Your sensor is oriented the same as Brians, and he was able to get around the strange RPm limit by running Opto-In, and just letting "Tach In" hang free (not grounded, not powered). DIP switches 1-1, 1-6.
        i don`t under stand the switchsettings1-1 is for map
        switch settings 1-6 enables vr
        i tried
        1on
        2on then 2offwith 3on and 7on?
        my bad.

        1-1 always.

        1-2 for the "opto-in" (no pullups).
        www.realtuners.com - catch the RealTuners Radio Podcast on Youtube, Facebook, iTunes, and anywhere else podcasts are distributed!

        Comment


        • #5

          Re: got problems

          Re: got problems

          I look forward to the day when we have identified a sensor, the Hamlin perhaps, that will allow all of us to have a "for sure" setup so we can go right to the tuning. Its fun on the bleeding edge, messy, but fun.

          I broke another rocker arm tonight going to the gas station but nothing else was hurt so off to the track we go.
          Drag Week 2006 & 2012 - Winner Street Race Big Block Naturally Aspirated - R/U 2007 Broke DW '05 and Drag Weekend '15 Coincidence?

          Comment


          • #6

            Re: got problems

            Re: got problems

            thanks for the help Scott
            i think i got senor noise fixed, had use tach in and adj r21 1.5t and r28 2 t and ground opto in
            I can see a big difference in cranking and idle quality

            thanks Ricky
            sigpichttp://projectstang.blogspot.com/

            Comment


            • #7

              Re: got problems

              Re: got problems

              I look forward to the day when we have identified a sensor, the Hamlin perhaps, that will allow all of us to have a "for sure" setup so we can go right to the tuning. Its fun on the bleeding edge, messy, but fun.
              Ain't it the truth. Its a challenge.

              The powerstroke worked well for me. I sent one to Shannon Clark but he couldn't get it to fit on his car. He went with the Hamlin and was happy. Do you have a source or website that has the Hamlin? What was its cost.

              Comment


              • #8

                Re: got problems

                Re: got problems

                I look forward to the day when we have identified a sensor, the Hamlin perhaps, that will allow all of us to have a "for sure" setup so we can go right to the tuning. Its fun on the bleeding edge, messy, but fun.
                Ain't it the truth. Its a challenge.

                The powerstroke worked well for me. I sent one to Shannon Clark but he couldn't get it to fit on his car. He went with the Hamlin and was happy. Do you have a source or website that has the Hamlin? What was its cost.
                Hamlin 55075 - find it at www.digikey.com

                www.realtuners.com - catch the RealTuners Radio Podcast on Youtube, Facebook, iTunes, and anywhere else podcasts are distributed!

                Comment


                • #9

                  Re: got problems

                  Re: got problems

                  yep http://search.digikey.com/scripts/Dk...967210&k=55075
                  sigpichttp://projectstang.blogspot.com/

                  Comment


                  • #10

                    Re: got problems

                    Re: got problems

                    Thanks guys.

                    We should start a thread of common sensors that we can use. I think it would be really useful. It'd be nice to be able to go to the parts store and go: Need an 02 sensor for a 00-04 VW 1.8t, a CAMP for a 98 Ford Powerstroke diesel, a water temp sensor from a ...

                    Comment


                    • #11

                      Re: got problems

                      Re: got problems

                      has anyone on here used the Hamlin 55075 sensor
                      Scott how did you like this senor compaired to Chevy 5.3 sensor?i`ve had one for couple weeks just have not built a bracket for it yet
                      i`m still having some very intermention spikes


                      sigpichttp://projectstang.blogspot.com/

                      Comment


                      • #12

                        Re: got problems

                        Re: got problems

                        has anyone on here used the Hamlin 55075 sensor
                        Scott how did you like this senor compaired to Chevy 5.3 sensor?i`ve had one for couple weeks just have not built a bracket for it yet
                        i`m still having some very intermention spikes


                        The *one* time I used it was with an Escort EDIS wheel, and it worked great - it was very sensitive to air gap, but it was easy to find the "working" distance, which was .036" for us. This engine only runs to 5000rpm though, so I haven't personally seen it spin 8000rpm but it's rated for a very high frequency which means it should work fine for your application.

                        Got any datalogs I can look at? Might be worth doing before you swap sensors.

                        -Scott
                        www.realtuners.com - catch the RealTuners Radio Podcast on Youtube, Facebook, iTunes, and anywhere else podcasts are distributed!

                        Comment


                        • #13

                          Re: got problems

                          Re: got problems

                          Got any datalogs I can look at? Might be worth doing before you swap sensors.

                          -Scott


                          chick your mail socct
                          sigpichttp://projectstang.blogspot.com/

                          Comment


                          • #14

                            Re: got problems

                            Re: got problems

                            see my detailed response in the email...


                            for everyone else reading: he had really clean datalogs with no loss of tach signal or anything other than what looks like spark blowout. His alternator is charging strong, and system voltage stays within a couple tenths of a volt. So, it seems like he's done a fine installation, just needs to work out a few external bugs,

                            -Scott
                            www.realtuners.com - catch the RealTuners Radio Podcast on Youtube, Facebook, iTunes, and anywhere else podcasts are distributed!

                            Comment


                            • #15

                              Re: got problems

                              Re: got problems

                              Scott is this the one I am getting? It will be tested over 8000 when we are done ;D :D :o
                              2007 SBN/A Drag Week Winner & First only SBN/A Car in the 9's Till 2012
                              First to run in the .90s .80s and .70's in SBN/A
                              2012 SSBN/A Drag Week Winner First in the 9.60's/ 9.67 @ 139 1.42 60'
                              2013 SSBN/A Drag Week, Lets quit sand bagging, and let it rip!

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