'89 318i 6 speed m50b32tu turbo swap build

[Northern]

Are you planning to use torque pro to log instead of rrlogger?

[pazi88]

Pretty simple.
Find the PIDs for rear o2s (0115 for bank 1, 0119 for bank 2) then setup the calculation based on the sensor you're using and save it.

You'll need to modify the voltage thresholds for DTCs for rear o2s that i added to the definitions.

Ah ok now I understand. I still need to convert my EU ms41.0 to US ms41.2 to get the OBD II functions because the ms41.0 is only OBD I.

[ba114]

Pretty simple.
Find the PIDs for rear o2s (0115 for bank 1, 0119 for bank 2) then setup the calculation based on the sensor you're using and save it.

You'll need to modify the voltage thresholds for DTCs for rear o2s that i added to the definitions.

[pazi88]

- custom PIDs setup in torque pro to log AFR, CEL and Boost from MAP.

Please tell me more how?

[ba114]

Wiring progress on the M50 obd2 swap:
- wide band input on rear o2 bank 1
- map sensor on rear o2 bank 2
- slot style maf wired up
- CEL wired to cluster
- OBD2 port wired to coin holder
- custom PIDs setup in torque pro to log AFR, CEL and Boost from MAP.

[CorvallisBMW]

Nice work on the 135i wheel, I'm digging it

[ba114]

this is an awesome quality build thread. :)

Thanks! Hopefully things will ramp up over xmas. About to re-order another cutring gasket next week and clutch and flywheel next month then i can throw it all in :)

[RenaissanceMan]

this is an awesome quality build thread. :)

[ba114]

Finally made a little progress. Spent the weekend pulling the head and cleaning up the block a bit. Positive news is that the head looks to be in excellent condition, as do the cams and ledges.

Also drilled, locktighted and safety wired the oil pump nut. That thing isnt going anywhere!

In other news i also decided i love my 135i steering wheel so much, that i would also buy and retrofit one to the e30. Pretty simple, just shaved the back of the wheel down, drilled holes and bolted to a boss kit for an aftermarket wheel.

Also wired up the OBD2 port to the ash tray/coin holder.

[ba114]

Not much progress lately. Motivation is still low. haven't pulled the M50 apart yet as i've been busy scrapping the rest of the car which proved to be very useful.

After paying $400 for the car, i salvaged:
Driveshaft ($200 to buy separately), and
Radiator ($150 to buy separately)

Total out of pocket = $50

In addition, i've managed to sell roughly $800 worth of parts out of it to-date before i scrapped the shell. A couple for large items are for sale with active bids that should bring in another $400, meaning total of about $1150 ($800 cash) benefit from buying this car. That should cover the cost of a new cutring gasket and the machine work for the head.

In the meantime i've spent some more time with the wiring and analysis of differences between the euro MS41.0 and US MS41.2. I will be using different inputs and outputs from the DME for different than intended uses from the factory. Examples of this would be:
- Muffler flap solenoid as boost (or AFR) safety
- EVAP cannister purge as boost controller
- Rear O2 as wideband logger
- Rear O2 as MAP sensor input

To facilitate this it is necessary to understand the differences in the harnesses and knowing what i need to add, and what can be removed.

I've attached my findings.

[potatomash]

$400 for a whole car lol. That's mint

Sent from my HTC One M9 using Tapatalk

[ba114]

It's weird. Everything I've read says to put these (e28 m5) mounts in the outside holes. Even doing that doesn't give them enough space; it's like 1.5" off.

[Northern]

Definitely good to figure out now. I found it was a pain to get it all installed, really had to leave everything as loose as it could be in order to get all the studs through the right holes (that's what she said) then crank them down. This was with the condor mounts, which have offset studs, but I assume other mounts are a similar story.

[ba114]

Decided to test fit the dud block. Seems I've installed the mounts in the subframe incorrectly.

Glad I found out now. Anyway will fix that up.

Also got the M50 up on the engine stand today so will start a teardown soon.

[ba114]

Engine out!