Reebuck1

Love my 2013 981S but as the sickness effects all us Porsche lovers....I need more Horse Power! Does anyone know what year 911s 3.8 motors will work with my 2013 DME and electrical systems? I rebuilt my 996 3.4 motor (with the help of L&M Eng.) and bumped it up to 3.8 and the torque increase was really great. I think it is time to do the same to my 981. Appreciate anyone help.

This is just a note to give all an update on my outcome from Porsche. Bottom line was a three weeks to get a reservation for them to work on the car with the PIWIS system. Bill turned out to be $2,200 total ...$725 for a Front End Control Module ...the rest labor (identify and install ). The starter relay tested fine and then jumped the starter relay to try and turned the car over. Car started. BUT the control module was sending a voltage signal that was to low to energize the coil in the starter relay. It appears the defective car battery allowed the voltage to go to almost zero which ended up corrupting the Control module. The give away should have been when the emergency flasher came on solid ( not blinking ) and slowly fading until you could no longer see any red glow coming from the button on the dash. I attached a picture of the Control Module below.

Just some update: Current fault code showing on my Durametric 10 2025 881202 c11005 a000 c12025 1000c a086 It appears to me to be some corruption of data in my front BCM (Body Control Module). Attached could be some support for this. Porsche BCM backups, programming & problems Cloud Mega Including here all backed up front and rear BCM files with Dflash and Pflash from this scrap Cayenne, spare Macan front BCM 7PP907064GD - front BCM ---- 7PP907279AS - rear BCM 7PP907064KK - front BCM --- 7PP907064KN - front BCM 7PP907064GA - front BCM Front BCM 5M48H - 7PP907064GD Cayenne 2014.rar Rear BCM 2M25J - 7PP907279AS Cayenne 2014.rar BCM 1N35H - 7PP907064KK.rar BCM 1N35H - 7PP907064KN.rar BCM 5M48H - 7PP907064GD.rar Front BCM 5M48H - 7PP907064GA.rar Cayenne, Macan, Panamera and others. Backups of MCU memories - D-Flash and P-Flash, what programmers to use and from which to stay away. IMMO/Key/CS related information and how to adapt used BCM and ECU modules to the car. There are a lot of posts around the forums where people are looking for help where from trying to read/unlock/write BCM is dead after. MCU's used in these BCM's is very sensitive (Motorola MC9S12 - 1L15Y, 1N35H, 2M25J, 5M48H) and some programmers when trying to ID/Read/Unlock/Write these MCU's tend to corrupt or erase the memories in these MCU's. From what i have experienced it is the D-flash and Partition configuration that tends crash. I have from scrap Cayenne 2014 4.2 diesel - front and rear BCM modules and both ECU's EDC17CP44 and I also bought used BCM from Macan 2017 to play with. BCM reading/unlocking: Cayenne Front BCM with 5M48H MCU, rear BCM with 2N25J MCU and Macan front BCM with 1N35H MCU. All 3 BCM modules i successfully read with VVDI Prog. I removed the diode, 0 ohm resistor, made the cut to crystal connection and i prefer to desolder the crystal too and 12V power supply to programmer connected. It had no problem reading the backup of Dflash and Pflash. It did the UNLOCK function without problem. From there is started to experiment what could be the reason for corrupting these memories. Using VVDI Prog i used LOCK function to lock back these MCU's where locked byte is 7D (FE for unlocked). I have Autel IM608 with XP400Pro programmer and I tried to use that for reading these BCM's. 2M25J was OK. 5M48H was OK. 1N35H - DEAD. Autel could not do the backup of the 1N35H, it was unsuccessful unlocking the MCU. After that VVDI Prog could not unlock it too because something in that MCU was already corrupted by Autel programmer. Had to use "Force Unlock" with VVDI Prog and it worked but Dflash was already wiped, partition config was wiped and Pflash was seriously corrupted. So i revived that 1N35H memories with what i had backed up before, did the LOCK again and tried again with Autel. Autel killed it again. I don't know about other people experience but mine Autel XP400Pro is a "No GO" fot 1N35H MCU. I am not saying VVDI Prog is the golden tool because some people using VVDI Prog have killed the BCM's. For example i tried to read the 1M35H and 5M48H mcu with VVDI Prog but 12V power supply disconnected - it did not read anything. But it also killed these memories like Autel. Maybe Autel has bad power delivery to MCU where 5M48H tends to survive but 1N35H is way too sensitive and dies. Anyone have experience with UPA programmer(original not Chinese clone)??? Immo/ECU/BCM CS: Since i have both BCM's and ECU from the same car i did some research on IMMO CS information. These are only my findings and I have no idea but maybe it can help to adapt used module to the car for someone using this info. ECU is EDC17CP44 like VAG cars i tried to use VVDI2 to calculate CS from eeprom and flash and it worked. In front BCM Dflash there are 2 CS. 1 for KEY programming and 1 that is exactly the same as VVDI2 calculated ECU CS. In rear BCM Dflash there are 1 CS that is a MIX from both ECU CS and Key programming CS. CS: 1B EE E3 28 DB 1A 39 7F 04 FA 01 A8 F2 8C E4 F7 - ECU (EDC17CP44) CS calculated with VVDI2 A1 64 65 AE F1 B7 0A 3A 6C EB 56 7E A1 34 92 BD - Front BCM CS for key programming (located in Dflash 0x0021D and 0x0211D) 1B EE E3 28 DB 1A 39 7F 04 FA 01 A8 F2 8C E4 F7 - Front BCM CS for ECU sync (located in Dflash address 0x0022D and 0x0212D) 1B EE E3 28 F1 B7 39 7F 04 FA 56 7E F2 8C E4 F7 - Rear BCM CS (located in Dflash 0x00202 and 0x02402) is a mix where 5th, 6th, 11th and 12th byte are from key programming CS and other bytes are from ECU sync CS All front BCM's location address in Dflash memory are the same for VIN, SW nr, HW nr, both CS. Going to have car shipped to Porsche in Charlston, SC 90 miles away. Closest place with a PIWIS system to reset BCM if that is the no start issue. My guess is c11005 is telling me it has restricted the cars ability to crank the motor over. I used an EPROM programmer to reconfigure my 986 so I could run a 996 instrument cluster in the 986. It worked well but I am not comfortable with attacking the BCM. More up dates to follow in a week.

Thanks Loren, Not the answer I wanted to hear but sounds like the only option I have. After I take care of it I will come back and let everyone know the final out come,

Thanks Loran, Cleared all Fault Codes and dropped from 44 to 11 fault codes. Durametric Report in file below. Noticed two things 1) My right hand gauge that displays information was showing TPM which I do not remember seeing before. 2) My emergence break would not manually shout off. Tried to start the motor...same issue ...will not crank. Front lights come on when key is turned to the start position. Hood was open when I tried to start car. The tire pressure faults are not correct because I filled all the tires before trying to start the car. Tried to locate a clutch senser but found nothing above the clutch pivot like there is in my 986. Is it a senser or the ignition switch or the DME not picking up a signal? Not sure what it is? Work Log-2024-10-17_11-21-47-AM.htm

Began having problems with the car when my new battery lost charge. Tried to start car and it would not turn over. Key locked in the ignition. Followed instructions on how to release key. Went well except I lost the small plastic cover (as shown on page 22 of the operators manual) you need to reinstall to get the key to function. Ordered a replacement piece and broke one of the small plastic legs that fit in the two slots to allow the key to work. Super glued the tiny plastic leg back on and installed the small plastic cover in the ignition. The six month battery turned out to be a faulty battery. Replaced for free. Car sat for four hours (no power) while I picked up and installed the battery. Put key in the ignition ...turned it ...all instrument lights came on but when turned to energize the starter nothing happened. Would not crank at all...NOTHING. Radio ,windows, instrument lights, blinkers and front lights all worked. Took my Durametric and scanned for fault codes. The results (44 fault codes) are on the attached file. Pulled out my multi meter and checked all the fuses .... all appeared to be good. Not sure where to go next. Anyone have any thoughts?? Work Log-2024-10-16_12-25-58-PM.htm

Thanks JP. I'll leave an update when done. Could you see the pictures I tried to include? If so I will leave some more that should be of interest for the engine rebuild. Thx. Bob

IMG_0228.heicIMG_0228.heicIMG_0228.heicIMG_0228.heicIMG_0228.heicIMG_0228.heicIMG_0228.heicIMG_0228.heicIMG_0228.heicIMG_0251.heicIMG_0282.heicIMG_0305.heic

Rebuilt a 2001 Carrera 3.4. Cracked #2 cylinder sleeve Sent case off to L&M Eng. came back in great shape and they bumped it to a 3.8. Build went great...motor back in car...runs great...tuns of torque. BUT noticed I was leaking gas. Took awhile but found that the #3 injector appears to be leaking. Is there an easy way to get to it without dropping the engine? Or having to remove the intake manifold? Thought I'd ask the experts!!

Don't have it fixed yet. Still getting data and will post pictures and charts shortly. Thanks

Thanks guys for the response...I have to go out of town for a few days and will be back at it shortly. I'll report back with pictures. Again Thanks !!

Still am wondering why I get no fault codes when car is just idling but as soon as I blip the gas I get a check engine light and the above fault codes?

DME is 5.2.2 from the 2.5 Boxster Intake and throttle body is from the 996 Carrera Air filter box is from a 987 but converted to fit in the 986 3 1/2 inch silicon piping runs from air filter to throttle body MAF is stock from the 996 with the 3 inch 987 tub that holds the 996 MAF MAF is located approximately 6 inches from the throttle body opening. oxygen sensors are the stock 2.5 oxygen sensors

Ahsai/ Loren, Finally got the motor in the car and started it up today....major mile stone. I had my DME re-flashed with a ROW flash. Am running CAT by pass pipes with no muffler as of yet. Put the boxster 2.5 pre-CAT oxygen sensors on the by-pass pipes. No seats in car yet. Motor started right up...at idle ...NO FAULTS !!! blipped the throttle a few times and got the following FAULT CODES: P1319 P1318 P1317 P0300 P0306 P0305 P0304 P0150 I am only guessing......... I have a bad Oxygen sensor in bank 2 (4,5,6) Cleared faults...and again at idle, it caused no fault code. gave it some revs. and same codes as above showed up. Any thoughts? Pictures and writ-up to follow. Thanks, Bob

Make sure you listen to JFP on pressure and especially BROKEN PLASTIC IMPELLER PARTS. I learned the hard way ! It was not cheep!!

Does anyone know where I can buy the fitting that connects to the high pressure side of the fuel rail? I am doing a Boxster motor swap and I am trying to run a new high pressure fuel hose to the fuel rail on the 996 3.4 motor and I can not tell what size the larger high pressure connector is or what size threads the needed female connector has or needs? Thanks in advance.

Down to final steps of a 3.4 swap into my 1998 Boxster ( including a 6 speed trans). I have a number of questions I hope someone can help me with or answer for me. 1. I have enclosed a picture of my exhaust headers. Note the inside diameter of 58 mm. Also note my fabricated intake manifold (Blue silicone piping) 3 in. ID. My question is how far away from the throttle body should my MAF be placed?? I am using a BMW MAF holder (black tub)with a Porsche MAF. Should this BMW tub be as close to the throttle body as I can get it or much further away as it is in the stock Boxster close to the air box?? 2. I would like to fabricate a pipe to eliminate my CAT. If I do this can I eliminate my post CAT sensors?? 3. The stock DME is Motronic 5.2.2 and is the same DME model that was in the 996 the motor came from. Will I still have to flash the DME before the car will run?? I know if I drop the post CAT it will need a special chip what if I do not drop the post CAT ?? 4. I would like to post a mistake list detailing some of the mistakes I had made on this journey if there is any interest out there...is there??

Great thanks !!!!

Rich , I found it thanks to Ashai! The Bosch numbers on the white internal section for the 88 pin DME plug are 1 928 401 587 and 1 928 403 122. That part has two numbers on it. This plug has two different size spade connectors. The small spade connector is Bosch number 1 284 477 219(JPT AMP substitute 927 774-3). The large connector is part number 1 284 477 121(JPT AMP sub. 927 775-3). Thank you for your help, it was very much appreciated. I was unable to get a pin out without destroying it. Thanks, Bob

Thanks Ahsai great detective work !! It is much appreciated !! Bob

This shows the DME 81 pin connector. Notice that the connector do not match the VW connector you spoke of. I have used the VW connectors on my cruze control install but it is not the same as the DME spades. Still looking anyone have any ideas???

I am in the middle of a 3.4 996 motor swap into my 98 Boxster and I have to add a wire to the #59 slot in the 88 pin DME plug. Does anyone know where I can find the female spade that goes into the DME plug? and also where I can get the insertion tool?

I am looking at the Porsche 996 Workshop Manual under "Changing AFT' and see a note that says "Without ATF, the engine must not be started and the vehicle must be towed." Under item #5 on the same page it says "Move selector lever to position "P" and allow engine to idle" Item #6 "With engine running, top up ATF again until excess ATF emerges from the bore of the ATF filler screw(2)." My question is should the motor be running when you are trying to top off the ATF level? I am confused by the manuals instructions. Can someone out there with more experience than mine offer the correct advice?

No, the AC was not on. I just went down and turned on the AC and the RPMs dropped !! Thanks again.

Finally back with data I promised.........below you will find my original Durametric readings and readings I took yesterday. Car is now running great and have had no further motor problems. I also managed to re-time the cams with the factory tools and you can see the difference in the below lines titled "Camshaft Position deviation". Hope this helps someone. AGAIN THANK YOU ALL FOR YOUR WONDERFUL HELP>>>>>NEVER WOULD HAVE GOT IT ALL WORKING WITHOUT YOU !!!! I am also providing all the read outs from my "Engine Module ME5.2.2 at idle after my around block run: Durametric version 6.3.2.5 1st run in 2nd run May 31, 2014 would not idle idles smoothly RPM .....................................................720 920 Load Signal ........................................... 1.30 1.45 Air mass ...............................................14.25 to 16.25 jumping 24.00 Speed .................................................. 0 0 Voltage ............................................... 13.45 13.30 IATS .....................................................69.8 50.3 ECTS ...................................................72.8 104.3 Throttle plate angle ................................. 0 0 Ignition timing .......................................3.8 to 9.8 jumping 3.8 Spec. air mass ......................................16 to 17 4 Spec. air adaptation .............................. -3 -10 Ambient pressure ...................................760 960 Injection time .........................................3.9 to 4.0 2.9 Exhaust temp. after cat. Converter ..........52C 52C Oil temperature ......................................72.8C 97.5 Engine compartment temp. .....................54.8C 59.3 Oxygen sensing cylinder 1-3 .................1.25 .98 Oxygen sensing cylinder 4-6 ..................1.25 .99 Ranger 2 Cylinder 1-3 (FRA) ..................0.98 1.00 Ranger 2 Cylinder 4-6 (FRA2) .................0.98 1.00 Ranger 2 Cylinder 1-3 (TRA) ...................0.37 rich 0.10 Ranger 2 Cylinder 4-6 (TRA2) .................0.37 rich 0.10 O2 sensor voltage ahead of cat. conv. ...... 0.00 0.27 O2 sensor voltage ahead of cat. c. bank 2....0.00 0.51 Camshaft position 1 deviation .......................-2.0 0.00 Camshaft position 2 deviation (USA model only).....3.0 3.00 HO2S heat. Res. Ahead of cat. conv........................3.1 3.1 Rough-running threshold .........................................8.5 8.9 Rough running.........................................................0 to 4.0 most of the time 0 to 2.8 0.4 Segment A ..............................................................1 1 Segment B...............................................................1 1 Leam. progress sens. Wheel adapt.........................0.0007 0.0007