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Pro Flo 3514 chip wanted

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  • Pro Flo 3514 chip wanted

    I have a Pro Flo 3500 setup running in my 91 RS Camaro, runs pretty dang good but I know the engine I built for it has a lot more to give if swap to a bigger cam. I just so happen to have a cam that is bigger, Edelbrock p/n 2204. Healthy bumpstick, should be a decent jump in power. The 3511 eprom works wonderful with the stock-ish cam at the moment, but the 2204 cam will require something different; if we jump over to https://forums.edelbrock.com/forum/pro-flo-efi/pro-flo/26065-pro-flo-chip-numbers we see a list of eprom chips and 3514 will fit the bill (2204 cam is 234 deg duration @ 0.050"). A few threads from the last year or so indicated Edelbrock was still making the chips, so I gave them a call on Nov. 1 2021, talked to a fellow who informed me that when Edelbrock moved out of California, they stopped making the chips. Seems like a combination of bad luck and bad timing, but that's the way it is some days.

    Now just because Edelbrock doesn't make them anymore doesn't mean that they can't be made. The chips are a 27C256 according to http://tunercat.com/tnr_desc/ecm_sup.html#edelbrock, I would imagine if I peeled back the sticker on my chip it would have that printed on it. 27C256 chips are available from amazon.com and a myriad of electronics retailers, and there are also alternatives like the 27SF512 chip as a drop-in replacement (check out http://www.moates.net/chips-and-sockets-c-26.html) and chip burners are not all that expensive in the grand scheme of things (take a look at http://www.moates.net/burn2-chip-programmer-p-197.html?cPath=94 [*note* the chip burner I linked will read 27C256 chips, but does not write them. It can write 27SF512 chips]). I myself already have items like this in my toolbox so I'm half way there already, right?

    Here's where it gets complicated (maybe). So there's all these zeros and ones on these chips, but they have to be in the correct order for everything to work as planned. What I need is a .bin file. Somebody somewhere in the world has a 3514 chip, either inside an ECM or sitting in a box somewhere. All I need is to set it in the chip reader, click the copy button and mere moments later, I have the file I need. I burn it onto a blank chip, write "3514" with a sharpie and I'm all set.

    If anyone out there has a 3514 chip they're looking to sell, I'm ready to buy it, skip the whole chip burning thing and go for an original. Alternatively, does anyone have one I can make a copy of? Or maybe we will all have a stroke of good fortune and somebody at Edelbrock has all the .bin files on a flash drive somewhere.

    I have done some searching, but all I've turned up are files for datastream definition (.adx, only really useful if you have a cable to go to your laptop) and .bin definitions that aren't what I need (.def, only useful if I have a .bin I want to make changes to) and those are for Magnetti Marelli ECMs that are similar but not the exact part number in the Pro Flo 3500 kit. Google searches show retailers have listings for the 3514 chips, but it's always a "ships from manufacturer" deal, eBay searches are turning up nothin'.

    tl;dr I need help obtaining an unobtainable eprom chip

  • #2
    This maybe easier to obtain :



    https://www.edelbrock.com/pro-flo-4-...nes-35760.html

    Don't get too caught up in the numbers.
    Just give the Engine what it wants &
    Let the numbers be what they are.

    Jim McFarland....

    Comment


    • #3
      Note:you can still use the current chip with new engine, will just have add more global fuel, for the larger cam.
      Don't get too caught up in the numbers.
      Just give the Engine what it wants &
      Let the numbers be what they are.

      Jim McFarland....

      Comment


      • #4
        2700 Cast, let's address your second reply first. I question that if just adding some (or a lot of) global fuel on the 3511 chip would work, why were there six different chips just for small block chevy applications? I see that 289/302 and 351 Windsor only have two chips each, and small block Chrysler uses two chevy chips to cover all their bases. All three of those different application sets break at 224 deg intake duration, and I'm planning on going with 234; that would put me on the wilder end of the spectrum even if I was using a system that only had two available chips. I'm familiar with older stock GM ECMs (late 80's, early 90's stuff) and I know they can be pretty unforgiving if you deviate far from stock parts combinations, I feel like this system is a bit more advanced and more easily tunable than those, but such a wide variety of available base calibrations suggests it still has it's limitations. I don't want to paint myself into a corner by swapping the cam and never being able to get it to idle properly when I know a better-suited calibration exists.

        As for your first reply, I know Pro Flo 4 is current tech, easily available, and tech support that's ready to help if I need it, but right now I'm trying to make the most of what I have and enjoy it.

        Comment


        • #5
          A "Edelbrock" Calibration map ( or chip ) are dyno tuned for a specific motor/camshaft.
          If you don't have the exact same motor. Then you just adjust the fuel up or down accordingly.

          Other EFI systems make you do the same thing too. But they don't tell you what the motor is when they made their Calibration map......or even if they used a actual running motor to make their Calibration map.

          Or to put it another way:
          Edelbrock Calibration maps are made to get specific motors up and running with out to much manual tuning.
          Engines combinations not listed need to do more then usual manual tuning.

          In my neighborhood, if you open your hood to check your oil, and the vehicle still runs after you close it.......Then your labeled the Neighborhood Mechanic.
          https://forums.edelbrock.com/filedat...?photoid=42773

          Comment


          • #6
            Last paragraph from page 3 of the Pro-Flo owners manual (you can find a .pdf copy here https://www.edelbrock.com/legacy-tech-support):
            "These effects arising from cam changes can have very large effects upon the fuel-metering and spark-advance calibration. Therefore, it is vitally important to start with a base calibration that was developed around a camshaft close to what is in your engine."

            BITE_ME and 2700 Cast, I see where you guys are coming from. It's not like the 3511 chip I have locks me out from adding or removing fuel or spark . I'm sure with a wideband O2, some time and dedication I could have it dialed in. It helps that it forces open loop when idling (p.43 under Closed Loop Fuel, will not operate in closed loop if RPM < 1850).

            My point is this thing was near about plug and play, fuel and spark curves were almost perfect out of the box, and I think the 3514 chip will put me right where I want to be. I figured if anybody in the world had a 3514 chip, they would possibly visit here eventually.

            Comment


            • #7
              Try all of Craigslist: https://www.searchcraigslist.org/

              I always find old new Edelbrock products on EBay.

              Basically search both places every 2 weeks, and you might get lucky.
              In my neighborhood, if you open your hood to check your oil, and the vehicle still runs after you close it.......Then your labeled the Neighborhood Mechanic.
              https://forums.edelbrock.com/filedat...?photoid=42773

              Comment


              • #8
                BITE_ME, your advice paid off. Ended up finding an 80% complete Pro Flo 3500 kit on eBay, had a 3514 chip and a 3512 chip with it. Now who do I talk to about sharing the files on them? It was Edelbrock’s intellectual property, I should probably ask someone before I start sharing it like it’s public domain. Maybe even host them here, Pro Flo 1 files are only 65KB.

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