The m54b30 E30 build (NL)

[maxpostma]

Because I chose to the put the dme and all the relays inside the cabin, I only have around 10 wires in my bay that go to the fuse box. They can easily be taped together and snaked behind the engine. You won't see any of them.

[sebe20]

Oh the wiring,
I just went with how it was, just covered it in scotch tape. And stuffed it under the cover. But I don't think that's an option for your clean look

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[maxpostma]

Looking good! A few small details: Consider installing a shield to prevent the hot radiator air from entering the intake, and grommet the opening the wire goes through to the interior. Have you been able to tidy up the wires into the dme? I am still looking for a good solution besides lots of zip ties.

Thanks for the tips, but air filter isn't really behind the radiator, will make a picture of this.
The radatior setup is all done including all the water lines. Still have to do the aux fan though.
Regarding the Dme wiring, just clean it up with gaffer-tape and zipties. something I will do very soon (hopefully)

[cwlo]

Looking good! A few small details: Consider installing a shield to prevent the hot radiator air from entering the intake, and grommet the opening the wire goes through to the interior. Have you been able to tidy up the wires into the dme? I am still looking for a good solution besides lots of zip ties.

[maxpostma]

what kind of paint did you use? spray can?

Yes, a spray can with 207 lachssilber. Had some laying around from painting the sideskirts.

[nando]

what kind of paint did you use? spray can?

[maxpostma]

Another time is now, thought about painting it later on.
But realised it's best just to do it now:

[maxpostma]

Another small update:


Went to the local wreckers and picked up a m52 fuel rail for only 15 euro's (thanks for the tip Sebe20 :))

Looks great and you can delete all the fuel hoses and the huge filter/pressure cilinder and connect the quick connect lines directly to the hardlines, perfect:


Also bolted the Aliexpress terminal to the firewall. Convenient to connect the startermotor, ECU and fusebox.


All the brackets had to go after I didged the idea of using the stock airbox. Germans really make sure that their brackets are mounted securely... :hitler:

After playing with the dremel for a couple of hours:




The remains:


Still need to touch up the paint, but that's something for another time.

[maxpostma]

The brown sensor is for the gauge.
If you want your pusher fan to switch on when coolant temp is at 97°C then you need a thermoswitch for desired temperature, a Relais and a 7.5-30A fuse. I put my thermoswitch at the radiator outlet in the elbow piece where the original temp sensor was. Run the wires from the switch to the Relais and let them switch your pusher fan. It's no longer controlled by the ecu but works perfectly fine. If you need a wiring chart I can hook you up.

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Perfect, was already thinking of using a thermoswitch, but the diagram is really helpfull. Danke sehr!

[hoveringuy]

The brown sensor is for the gauge.
If you want your pusher fan to switch on when coolant temp is at 97°C then you need a thermoswitch for desired temperature, a Relais and a 7.5-30A fuse. I put my thermoswitch at the radiator outlet in the elbow piece where the original temp sensor was. Run the wires from the switch to the Relais and let them switch your pusher fan. It's no longer controlled by the ecu but works perfectly fine. If you need a wiring chart I can hook you up.

Das stimmt, exactly what I did. Mine comes on automatically or manually if I engage the A/C button.

[sebe20]

Thanks for the help. Isn't the e30 brown temp sensor for the gauge? Or are you also able to use it for the electric fan?

The brown sensor is for the gauge.
If you want your pusher fan to switch on when coolant temp is at 97°C then you need a thermoswitch for desired temperature, a Relais and a 7.5-30A fuse. I put my thermoswitch at the radiator outlet in the elbow piece where the original temp sensor was. Run the wires from the switch to the Relais and let them switch your pusher fan. It's no longer controlled by the ecu but works perfectly fine. If you need a wiring chart I can hook you up.

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[maxpostma]

I think it's more likely a PWM signal to check if the fan runs?
Would not recommend to directly wire the fan to the ecu, it would die. You could use it for a relais but im not 100% sure if that's the function of the pin.
You need the E30 sensor with brown connector. That's the only one that worked out for me. The DME signal wont work.

Thanks for the help. Isn't the e30 brown temp sensor for the gauge? Or are you also able to use it for the electric fan?

[sebe20]

I'm currently busy with the wiring harness.
-is it possible to connect the electric fan signal wire (pin 4 x0004) of the ms43 dme to a pusher fan for the coolant radiator?

-is it necessary to use an e30 coolant sensor for the gauge? Or is it also possible to use the ms43 signal and connect this to c101 pin 4?

I think it's more likely a PWM signal to check if the fan runs?
Would not recommend to directly wire the fan to the ecu, it would die. You could use it for a relais but im not 100% sure if that's the function of the pin.
You need the E30 sensor with brown connector. That's the only one that worked out for me. The DME signal wont work.

[maxpostma]

Nice! Hopefully you didn't fry anything with that little hiccup. Sounds mean!

Thanks, it's still open headers :)

I checked the fusebox wiring and indeed some wires had to be taped up because the plastic was melted through. Removed the stupid ground wire and everything is fine now

[dude8383]

Nice! Hopefully you didn't fry anything with that little hiccup. Sounds mean!