OK, I am searching for an ECU for a '74 2.0 and so far, no luck.
I have read through pbanders D-jet pages many, many times and in the list of suggested parts for a '74 build, the 043 or 044 is recommended. My question is: what happens if I were to use an ECU from a '73 or '75 2.0? I have one of each sitting in the garage. Will using either one cause any kind of damage? I talked to a guy who has worked on 914s for over 20 years and he said he has swapped ECUs before and had no problems.
I will buy the proper ECU when one shows up but in the meantime, I would like to get this engine running so I can see what kind of shape it is in.

Thanks.

Won't hurt a damn thing ... may not run real well and then again, maybe it will. Use an 052 ECU ('75-'76) with an 049 MPS and you will be golden.

Wrong ECU won't run right, you'll end up changing out a lot of other EFI components to match, & then that part of the project runs away with itself.

Plus it's a Creamsicle LE, so you'll want to do it right in as close to "as built/as OE" as you can - so stick with the proper parts (Jeff Bowlsby or Davep may have a 74 2L ECU core around that they could sell you).

Send your current 74 2L ECU to these guys at the Pelican link below & have them rebuild/reman it for you - or find a used core 74 2L ECU on here, 914club, TheSamba, eBay, etc. if you have nothing in it now (check 914 PET for proper part no. first before buying & get exact nos.).

http://www.pelicanparts.com/cgi-bin/smart/...74%29%2C%20Each

BRET has been doing these since the 70's - initially as a reliable lower cost alternative to a new factory unit (read pricey), & now they're about the only game in town since they're NLA.

I had one from BRET put in in the late 70's & it ran fine up to 85 when she went into my garage for hibernation after the gal whacked her back then (7-8 years).

Happy Mammorial Day!

Click to view attachment




Wrong wrong wrong wrong, sorry TOM T. but this guy can use his '75 ecu.. if it is a 2.0 ecu, the 052 will run great!! plus it has the additional overrun shut off so you may save some fuel.. I ran one on my 74 2.0 for 2 years, it was installed my schnieder autohaus of santa barbra by joe schnieder himself, has been working on 914 and all porsches since before i could get a license to drive. also if you check the renlist ecu compatibility chart it proves goood there too, also if you really read that chart you will see it is an unfinished doc. which means he had not tested all compatibility.. just beware of using the 037 ecu as it needs certain ccompatible parts..

ECU / MPS Compatibility Table
This table is a work-in-process, I'll update it as I complete more characterizations of ECU / MPS combinations. The intent is to identify the compatibility of non-OEM combinations of ECU's and MPS's. OEM combinations are identified with an "OEM" prefix and are highlighted blue. Other possible MPS's and ECU's are highlighted in green or yellow for potential application (none are exactly the same), red if there is no other combination that will work.

http://members.rennlist.com/pbanders/DJetParts.htm


I just saw an 74 ecu go with other fi equip for less than $100, I sold one for $100 and bought an NOS unit for $175 they are out there..

OK, I am searching for an ECU for a '74 2.0 and so far, no luck.
I have read through pbanders D-jet pages many, many times and in the list of suggested parts for a '74 build, the 043 or 044 is recommended. My question is: what happens if I were to use an ECU from a '73 or '75 2.0? I have one of each sitting in the garage. Will using either one cause any kind of damage? I talked to a guy who has worked on 914s for over 20 years and he said he has swapped ECUs before and had no problems.
I will buy the proper ECU when one shows up but in the meantime, I would like to get this engine running so I can see what kind of shape it is in.

Thanks.

I just saw an 74 ecu go with other fi equip for less than $100, I sold one for $100 and bought an NOS unit for $175 they are out there..

You may have missed the ecu/mps compatibily chart in your many reads.. about 2/3 the way down the page.. should help you out perfectly

http://members.rennlist.com/pbanders/DJetParts.htm

Yep, been over that many times. Maybe I didn't read it right those times but now that I look again, I see the 037 ECU is a green match with the 043 MPS. I have an 037 ECU so will give that one a try.
Thanks!

with the 037 ecu you would also need the ballast resistor for it to run better, I have used the 052 in my 74 stock and it ran really really well, also was read above installed by an senior experioenvced porsche mechanic, in other words tried and true.. 052 seriously will work well ..

Won't hurt a damn thing ... may not run real well and then again, maybe it will. Use an 052 ECU ('75-'76) with an 049 MPS and you will be golden.