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I'm finally getting around to installing my Dynamic EFI EBL Flash II with Port Mod into my '86 Corvette. I've got the MAP wired in place of the MAF. I just need to know what needs to be re-pinned to convert from my old -165 ECM to the EBL -747 ECM. I've searched to high heaven trying to find this tidbit of information, I can't find it. I can find pin changes for early '84 and '85 cars, but not the '86-'89 years. I don't believe I got it with my EBL. Does anybody have their old Dynamic instructions kicking around? I If I stare at my FSM long enough I might be able to figure it out, but I also might muck it up. Shameless self promotion picture
Getting to the ECM on an early C4 is not fun, I 'd really like do only do this once.
I'm finally getting around to installing my Dynamic EFI EBL Flash II with Port Mod into my '86 Corvette. I've got the MAP wired in place of the MAF. I just need to know what needs to be re-pinned to convert from my old -165 ECM to the EBL -747 ECM. I've searched to high heaven trying to find this tidbit of information, I can't find it. I can find pin changes for early '84 and '85 cars, but not the '86-'89 years. I don't believe I got it with my EBL. Does anybody have their old Dynamic instructions kicking around? I If I stare at my FSM long enough I might be able to figure it out, but I also might muck it up. Shameless self promotion picture
Getting to the ECM on an early C4 is not fun, I 'd really like do only do this once.
I'm finally getting around to installing my Dynamic EFI EBL Flash II with Port Mod into my '86 Corvette. I've got the MAP wired in place of the MAF. I just need to know what needs to be re-pinned to convert from my old -165 ECM to the EBL -747 ECM. I've searched to high heaven trying to find this tidbit of information, I can't find it. I can find pin changes for early '84 and '85 cars, but not the '86-'89 years. I don't believe I got it with my EBL. Does anybody have their old Dynamic instructions kicking around? I If I stare at my FSM long enough I might be able to figure it out, but I also might muck it up. Shameless self promotion picture
Getting to the ECM on an early C4 is not fun, I 'd really like do only do this once.
Not the repinning instructions for '86-89 TPI cars. They show a drawing of the EBL pin-out but the drawing lacks the pin locations for the harness (and which pins need to be moved). It's not on the Dynamic website nor is on the software CD.
So I'm guessing you can't just go off the color coded wire at the MAF and once all the other wires have been pinned confirm that wire isn't being used, then connect it to the appropriate pin for the EBL?
Have you emailed Bob? He usually answered my questions in a timely manner
The Dynamic file "EBL information" shows
MAP input is pin C11 light green
Map ground is pin D2 purple
Last edited by flannel_man; Aug 7, 2024 at 10:13 PM.
My understanding is there's more to converting a -165 TPI harness than just the MAF to MAP wire conversion. There are several other pins that need to moved. Yes, I've tried to contact Bob near two weeks ago.
Between the Dynamicefi website and your FSM you have all the information you need. The harness connectors are marked A B C and D and which end starts number one. It also shows you in the FSM how to identify the connector pins. The wires are color coded so you can identify the wires. Take a sheet of paper and make three columns. Left FSM color, Center A1 A 2 and so on. Right EBL color. A1 is DK GRN/WHT in the FSM. It is the same for the EBL so no change. When you are done you will know which wires to repin. It will take a few minutes but it is easy.
That was going to be my next (last) resort. Although I've been fooled by color coded wire before. But Rbob contacted me and saved me from that folly. So here's the info for posterity to find:
Dan,
Here is the short version of what is required to re-pin the '86 -'89 TPI MAF cars to the EBL:
1) Lift pins: A2 (BRN), C2 (BLK/PNK), C15 (DRK GRN), D10 (BLK/WHT), D11 (DRK BLU), D12 (BLK). Fold back into harness and protect.
2) Move pin C1 to C2, Fan (DRK GRN/WHT)
3) Move pin C8 to C7, Hi-Gear (DRK GRN or LT BLU) Note: C7 may have a wire, if so remove and fold back into harness
4) Move pin D15 to D14, Inj 1,3,5,7 (LT BLUE or BLK/PNK)
5) Move pin B12 to C11, MAP signal (DRK GRN)
6) Wire in MAP sensor, pins on sensor:
A: GND - use MAF sensor wire from pin B (BLK or BLK/PNK)
B: Signal - use MAF sensor wire from pin C (DRK GRN)
C: 5V REF - wire to TPS pin C wire (GRY), also found
at ECM pin C14 (GRY).
Dynamic EBL repinning
