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You will have to run a 12 gauge wire from the black block to a 30 amp inline fuse to the positive battery terminal post (see pic below).
In the pic below I had to use the y jumper setup for the main relay because I believe I have an ongoing issue which I believe is coming from the fuse box. I tried different 5 pin main relays and none of them seem to work. I would only get crank but, no start (no fuel, no spark). Maybe I have the wrong relays? I dont know, I'll figure it out later.
Anyways, I cranked the car up today and it starts and runs! Engine sounds smooth as butter! Feels like a new car! Motronic 1.3 FTW!I have not test drove the car yet. I have to do some cleaning up and put in the radiator and other stuff. I'll figure out how I'm going to mount the ecu and relays in the glove box later.
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Wanted to give you all an update on the car. I took the car on several trips and the car runs and drives great with the motronic 1.3 conversion. It's waaay better than the old 733i harness and components. I'm very pleased.
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Last edited by mpvibes; 06-25-2021 at 01:22 AM.
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Please I'm me about conversion were getting out buts kicked
- - - Updated - - -
Hey call me or email . We have questions about the conversion
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Hey, what do you wanna know about the conversion? How may I assist?
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nebraska_e28
Great thread!Originally Posted by mpvibes
Wanted to give you all an update on the car. I took the car on several trips and the car runs and drives great with the motronic 1.3 conversion. It's waaay better than the old 733i harness and components. I'm very pleased.
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Is this is a 733i motor? Can you give more details on power delivery, throttle response & mpg? Thanks!
Last edited by gixxerboy; 01-22-2022 at 11:09 PM. Reason: adding info
Member
Thanks, its a m30b34 motor out of a 1985 735i. I was running 733i wiring electronics on the 735i motor. The motronic 1.3 is way more superior over the old electronics. I have more toque, the motor is more aggressive and responsive and its reliable! I've been driving with this setup and its awesome!
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Last edited by mpvibes; 01-22-2022 at 11:50 PM.
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Update: I fixed my battery drain issue that I have been dealing with for about 10 years now. I tried multiple 5 prong bosch/aftermarket relays and they didnt work. The car would crank but, would not start. I was doing some research and I decided to purchase a BMW DME relay and give it a shot. The car fired right up and has no battery drain issues when you leave the car off!
Been driving the car everyday with no issues! The Motronic 1.3 setup is reliable and dependable!
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Last edited by mpvibes; 07-24-2022 at 11:58 AM.
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This is really good stuff. Is this possible to work on a euro M30B34 E24?
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