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Author Topic: 1990 325 5sp stock  (Read 537 times)
DevInAz
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« on: January 14, 2012, 06:24:22 pm »

Goal: better running 325 than stock with future turbo upgrade in the next year. This is a daily driver.

specs: stock m20b25
          Bilstien sport shocks with H&R lowering springs
          New brembo rotors with new pads and steel brake lines all around
          z4 short shifter
          New motor mounts/trans mounts and cooling system minus radiator
          custom injection wiring - stock ignition with all new components
          3.6 VEMS
          board mounted MAP
          EGT
          PS2 - I made an error ordering the ps2 and didn't want it but i'll leave it since its there.

Tuning: Mattias - M20  config thats been adjusted for our injections and local 91 fuel




air flow meter delete with factory air box. we used a m30 afm flange and bolted it to the stock box and modified it to fit. the aluminum tube still needs to be welded but thats the basic look of it.























The wiring still needs to be cleaned up but first I need to get the wideband working correctly. The car runs really good but for some reason the wideband is reading .06 o2% while trying to calibrate. I've doubled and triple checked my wiring and my supply voltage and grounds. All the wideband settings are default expect the two setting I recieved with my build sheet. Those are entered correctly. i've switched out my o2 sensors with known good ones also. As a side note while trying to calibrate my o2 sensor it says heating and never changes. i don't know if this is a hardware or software issue. I've submitted a error report here: http://vems.hu/vemstune/bugreports/reports.php?cmd=view&key=bgjoII


« Last Edit: January 14, 2012, 07:53:33 pm by DevInAz » Logged

http://www.vemssupport.com/forum/index.php?topic=1473.0
My project, someone elses car
1989 BMW 325- m50 swap, vems 3.6, with turbo
DevInAz
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« Reply #1 on: January 22, 2012, 11:47:43 pm »

still working on the wideband problem here:   http://www.vemssupport.com/forum/index.php/topic,1905.0.html

The cars EGT will get ran tomorrow.
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My project, someone elses car
1989 BMW 325- m50 swap, vems 3.6, with turbo
DevInAz
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« Reply #2 on: May 17, 2012, 01:13:23 am »

UPDATE:

The car is running great after I was sent another VEMS to fix my wideband problem.

I would like to hook up the MPG gauge just to see it move around. I don't care if its accurate or not. Has anyone ever got this to work some what with a P or S output? I hooked it up to a stepper but it would stay maxed out. I need to figure out the resistance range of this gauge.
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My project, someone elses car
1989 BMW 325- m50 swap, vems 3.6, with turbo
Erikk
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« Reply #3 on: May 17, 2012, 08:06:23 am »

Check out mattias memberspage: ../MattiasSandgren/BmwEconoMeter
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DevInAz
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« Reply #4 on: May 17, 2012, 10:30:28 pm »

It appears this can't be done without some serious effort. Are the designers still planning on installing a variable output table for something like this?
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My project, someone elses car
1989 BMW 325- m50 swap, vems 3.6, with turbo
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