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xr_guys

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xr_guys last won the day on October 1 2018

xr_guys had the most liked content!

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About xr_guys

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  • From
    Duvall, WA
  • Porsche Club
    PCA (Porsche Club of America)
  • Present cars
    2002 Boxster S
  1. Phil, Can you please add more details to what pins need to be moved? Thanks, XR
  2. Phil, Here is the xlsx file pin comparison. Engine side (Cable end attachment to the engine) Car Side (Cable end attachment to the car) Thanks, XR Porsche Boxster 7.2 to 7.8 DME Pin Comparison.xlsx
  3. Hi, Yes, managed to get it running. Actually had it MOTd and on the road this week. Still a few bits to do, but couldn’t resist top down motoring, since the sun shines so rarely here in the UK. You need to get hold of the proper 2003 wiring diagram, it’s easy once you have this. The one on the pelican parts web site is no good, ignore it, it’s a red herring. Wasted far too much time with it. I assuming you’ve used the 2003 engine wiring loom and DME7.8 ECU. I’m using a wire loom that came from a 2003 2.7, the main difference is the reverse back up light connector from 5 spd to 6 spd. All connectors match up. The 2003 engine came from automatic transmission so the wiring loom that came with is different from the 6 spd. If you took the wiring loom from the 2003 engine, you’d assume that these connections to the ECU would be right and the problem lies with the plugs / loom between the car and ECU. You’d be wrong. Which side are you referring, the car side connector or the engine side connector? From memory and I can check later in the week if you are still struggling, make sure you have the MFI/DI relay wire RD/BN moved from PIN B23 to D26 on the DME7.8 ECU. Please if you have time, if you have additional info please share it. I made xls file mapping the 7.2 vs 7.8 DME pin connection, hopefully and if I feel confident enough i will publish it to help others. I assume you will have the obvious plug A wiring repinned, but it was the above one that really stumped me. Once sorted, it fired straight up. I already moved Terminal 30 to pin A2, waiting for additional order of wire terminal for the A connector. How about the Motor Throttle actuator lines, did you have to move that to A connector from C43 & C44 After that I’d buy the Autel Diaglink from Amazon for around £80. My generic OBD2 reader didn’t pick up all of faults the Diaglink did. Then work through any other faults. I bought a donor car, heard my engine wiring and in the first instance assumed it was the a wiring issue. I will check There are three multi-pin plugs on the LH side of the rear boot (trunk) on the rear fire wall. Check that the same colour wires go in and back out of these two plugs. Struggled to find tools to remove some of these pins. Do you have pictures? Sorry if I’m a little vague. I’m not at home at the moment and don’t have all of the info with me at the moment. So let me know if you are still struggling. Thanks for your response
  4. Vish, The 6 K is about right, depend on your location? Reuse the old engine · Remove engine from the car 8 hrs · Need two recondition heads $1500 (each x 2) $3 k total · Pull head from the engine 4 hrs · Re-seal the engine with new gaskets 4 hrs · Reassemble the the engine and reconnect wiring harness 4 hrs · Install engine 8 hrs · Run and flush old coolant 2X to removed contaminated coolant 4 hrs · Miscellaneous work 4 hrs Keep in mind after all of that, you still have 186K miles on the bottom end. You may be able to find a lower miles engine for $4500 and $1500 for installation. It goes back to about the same cost but with half of the miles. XR
  5. Hi Phil, Did you resolve this issue, i have exact problem with the transplant 7.2 to 7.8 DME. 2002 Boxster S 6 speed with coolant intermixed issue, replacement engine is a 2003 Boxster S. No crank start, OBD2 not connecting and engine failure error flashing. Thanks, XR
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