OBD2 S50 up and running!

[328ijunkie]

As many of you know i hate OBD1 and i hate when people OBD1 convert a OBD2 S52/M52. So i went as far as to for no other reason than its awesome and so less annoying in so many ways upconverted this customers S50 to run OBD2. And look at the result! 2nd one in existence that i know of

1st try starting it:

https://www.facebook.com/video/video.php?v=4411358132302

Pictars:






Proper ECU setup, Proper Brake Booster Setup, and Correct Trans/Diff setup=Perfection.

Specs:
91 318is
Rebuilt Top End, New HG, etc 3L S50
OBD2: Knock,Cam, Euro Crank, MMW rethreaded IAT in the manifold, HFM sensors
Eric M50 Manifold Conversion Kit with MMW welded dipstick running fully functional OBD2 cyclone separator.
OBD1 Intake Manifold, OBD1 TB
Welded OBD2 Headers, Dual Primary O2 sensors
OBD2 VC/Coils
Resurfaced S52 FW with new clutch kit. S52 Clutch Slave
ZF320 w/ stock shift linkage
E34 V8 booster/25mm MC setup with MC mounted Res.
2.93LSD
E36 Non M rack
MMW OBD2 Conversion Harness
M3 harness covers, 318 ECU mount
Markert motor works Flashed S52 ECU for the S50, 7200 limiter
Rebuilt Vanos Unit
MMW conversion AC lines running R134
MMW motor mounts: No shims, factory motor orientation
Mishi Radiator


As far as MPGs and stuff go, i only get the car for ~100 miles (assuming there's no issues that warrant me running it longer, which i don't expect) so i wont know much about that but ill get the owner on here to share his thoughts.

[jrdeamicis]

Congrats!

That makes you the 3rd person in the country do this swap.

What ECU are you using?

MS41.1 S52 or M52?

[328ijunkie]

ah poop. Thought i was the 2nd lol. I knew you were the first ;)
MS 41.1 S52 Box with Technica flash on it.

[samiam3356]

We need more documentation on this stuff. Like MPG increase, torque change, horsepower change,

How does it feel Dave?

[jrdeamicis]

ah poop. Thought i was the 2nd lol. I knew you were the first ;)
MS 41.1 S52 Box with Technica flash on it.

I was actually the 2nd. Lol.

We should do a partner dyno session with an M41.1 M52 tune vs an S52 tune.

The M52 tune has more timing but runs the LTFT @ 7%.

If that tune works out well, I will send my ECU and some cash to TT.

[jrdeamicis]

We need more documentation on this stuff. Like MPG increase, torque change, horsepower change,

How does it feel Dave?

I have had my S50 in my E36 M, and E30 and now a Z.

I ran an M50 intake on the E36, E30, and Z.

I run an M52 intake now.

I get 27MPG cruising, 22/21 screwing around. Its an MS41.1 tune for the M52.

For putting around I prefer the M52 intake.

[328ijunkie]

Updated original post~!
Also ill see if i cant get the owner to throw it on the dyno ;)

[coreyw]

I run an M52 intake now.
For putting around I prefer the M52 intake.

I've been debating keeping the S52 intake on my engine or swapping in the M50 intake. It definitely be less work keeping the S52 intake on, and it'd be mostly a street car, very rarely driven at the track. Does it help booster clearance or anything using the S52 intake?

[Gooch]

Looking good, Dave. How did you mount the diagnostics port, got a close up of that corner of the bay?

[328ijunkie]

I use a stock E36 Diag port bracket :D

[Roysneon]

What's the scoop on that booster? Does it bolt directly to the firewall? Are the master cylinder studs at 3 and 6 oclock or are they diagonal?

[Roysneon]

OK, I think I checked it out, the firewall needs to be drilled to fit, but it should fit in place of my iX booster, will use the iX master, doesn't have to have the rod shortened and is the same size as the iX. AMIRITE?

[328ijunkie]

^you sir are rite ;)
Flush mount booster and oversize MC. And with the right res it all fits perfectly ;)

[Gooch]

I use a stock E36 Diag port bracket :D

Snap a pictar for me of the pass strut tower with the mount, pretty please?

[328ijunkie]

See: https://www.facebook.com/MarkertMotorWorks?ref=hl
For first try emissions test! Run on another customers tuned S52 (3.2 Thus the higher HC) ECU as a BFc member still hasnt shipped me the ECU for this car yet :(