BMW E30 M20 VEMS,turbo

gox · August 26, 2007, 11:34:31 PM

Hello British ppl :P
I`m curently makeing wire harness for my M20 2.7 engine then going turbo.
Engine specs:

stock 60-2 wheel with VR sensor
Schrick 288 cam
forged 324td crank
130mm rods
low compression pistons
t04e turbocharger in the beginning then going to Schwitzer S3
55lb injectors lowZ
Split pulse equal lenght turbo manifold
XXXL front mount intercooler...

....

;) i`ll post some pics as soon as i get the engine working ;)

Gogi

BenFenner · August 27, 2007, 04:07:27 AM

2.7 liters? So you have a BMW 325e?

gox · August 27, 2007, 07:30:43 AM

nope :)
curently eta bottom "i" head,"i" pistons,"eta" rods
i wrote 2.7i ;)

BenFenner · August 27, 2007, 05:00:28 PM

Gotcha.

I have a friend installing VEMS on his 1987 BMW 325is. He should be starting a thread here soon. Maybe we could answer some questions you might have, as he's about 1/3 done with his install at the moment. Keep up the good work.

gox · August 27, 2007, 11:48:23 PM

yeah,that would be great

I finished harness few minutes ago,got to wire up IAC and set it up,but firrst i need to set the tooth stuff...

Tnx

Gogi

gox · August 28, 2007, 05:34:19 PM

Project Car ;) after i get it working,its going to be painted and "get dressed" in Mtech2 and Alpina 17" rims

gox · October 20, 2007, 11:07:18 PM

After short problems that i resolved an hour ago,i can continue working on the car.Problem was calibrating Wideband,it remains to wire all things up to EC36 and EC18,test for spark and go on...

Since this is my first Standalon Engine Managment expirience i`m doing it very slowly,and i have a lot of job to do beside my car so....takes a lot of time to get it done.

Here are some pics taken few weeks ago,testing Genboard,makeing harness...

Me makeing relais ;)

Injectors wiring

Overview

Problems again?? ahhhh....lets read ;)

Got two more hands,that nice...

I will continue with wiring tomorrow and try to get spark....

danmartin · October 21, 2007, 12:06:19 AM

Yeah the wiring is... fun ::) Keep us up to date with the spark and good luck!

gox · October 23, 2007, 04:46:28 PM

:)

I`m doing this install realy realy slowly ;) its raining over here and its cold as hell,need to crimp the wires and push it into EC connectors,i`m using stock coil,so + is fused from relay whit "Ignition ON" and on "-" i have +12V,i have 8 IGBTS so i can use EC36-Pin35 right? i will not burn anything with this? :)

I havent made some good IGBT coolers so i dont want to hook anything to the igbt's yet but i will arange that in few days (as soon as rain stops)

Few other question related about Primary trigger setup.

"TDC after the trigger" is set with strobe right?
"Crank min period" - what about this one?
What are these "Tooth Relative ..." things?

Tnx guys

[email protected] · October 23, 2007, 06:43:00 PM

Quote from: BMW 325i on October 23, 2007, 04:46:28 PM
I`m doing this install realy realy slowly ;) its raining over here and its cold as hell,need to crimp the wires and push it into EC connectors,i`m using stock coil,so + is fused from relay whit "Ignition ON" and on "-" i have +12V,i have 8 IGBTS so i can use EC36-Pin35 right? i will not burn anything with this? :)

"TDC after the trigger" is set with strobe right?
"Crank min period" - what about this one?
What are these "Tooth Relative ..." things?

with 8 IGBTs EC36-pin35 is populated - even if it wasnt you'd not have a problem, the resistors in the box would mean that the coil just cant charge enough.

TDC after the trigger is set with a strobe
Crank min period is the minimum time between trigger pulses = 1/(num teeth*max rpm/60)

Tooth relative is only used when special filtering is selected

gox · October 25, 2007, 05:40:30 PM

Update:

Did little soldering today on wires,IAT wires were short,and TPS +5V was short (i thing its +5v since its red/white) i`m using E36 TPS so need to find pinout...not shure what is what.
Looking for termal paste for cooling igbt's,i want to make shure that they are cooled enough...and i`m ready to start the engine,i think i`m getting very excited when i think on that one...

:)

Didnt have camera so pics next time,sorry

Cheers

gox · October 26, 2007, 06:22:17 PM

What shoild i set in Ignition Settings?
h[2] = 00 only? since using EC36 Pin35 for Coil
Ignition driver type = DUMMY?
Dwell @14V = 3.00?
Dwell @ 6V = 2.50?

[email protected] · October 26, 2007, 06:29:30 PM

With a single coil you might want to up the dwell time to about 4.5
everything else looks fine there.

Once the sparks are okay and you decide to start reving higher you can reduce the dwell.

gox · October 27, 2007, 11:10:42 PM

Ok i got spark tonight ;) need to set TDC after the trigger and set Injetor Settings and hear it roargh ;)

Ban what did u guys used for Injector Settings?

Tnx

/Gogi

gox · October 27, 2007, 11:29:16 PM

I forgot to mention that i installed TS diode,i think i did it in good direction since it doesnt have the white mark on it...it had red paper on one side of the leg and the white on the other...

pin23 ---------------- |TSdiode|---- --------- Inj+Vbatt

:) sorry for drawing

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BMW E30 M20 VEMS,turbo