Installing VEMS on M20B27 BMW engine.This is my first VEMS project,and first standalone project ever,so i would need all the help i can get! :) Tnx
My goals are to get NA engine running on VEMS and doing a few dyno runs,paint car, then go turbo.
I finished my harness few days ago,waiting to get some time to try if i got spark,then i`m going to wire everything else to Genboard and try to start the engine.
My pic galery: MemberPages/MilanaPerisic/Pics
Current engine configuration:
- m20b25 head
- m20b25 engine block shortened for 2,4mm
- m20b27 eta crank
- m20 rods 130mm
- m20b25 pistons (8.8:1 pistons from 325i Cat.)
- Schrick cam 288
- M30 AFM (i`m glad i`m getting rid of this think...)
- M50B20 injectors (same cc like stock 715 injectors just got 4 little holes and you get nicer fuel fog)
- Motronic 173
Dyno results with 205/50 R15 159,6HP and 230Nm
Planned configuration for turbo:
- b20 head with b25 valves,welded water channel,3 angle valve job
- b25 engine block,normal height
- 524TD crank,rods
- equal lenght tubular split pulse turbo manifold
- Schwitzer S3,got few turbo so i`m going to try witch one gives best results (Schwitzer,Holset,KKK)
- Huge FM intercooler
- 55lb injectors
- walbro 392gsl
- schrick 288
- wasted spark
- 50mm wastegate
- wbo2,EGT,knock
- ...
Sensors
- Throwing out MAF ?
- What TPS will you use ?
- What MAT (airtemp) sensor will you use ? There are a few MAT sensors in
- WideBand O2
- EGT sensor
Ignition
- 3x2 wasted spark module ?
A: For the NA engine,that i`m curently working on,i`m going to use stock coil,with turbo,yes,i was planning to use 3x2 wasted spark module from Opel Omega B,Vectra B,Calibra V6 (same bosch number as one from the webshop]
- Stock 60-2 wheel with stock VR sensor
Fuel Injecton
- MSD/Halley 55lb lowZ injectors from [racetronix]
- Walbro 392GSL inline fuel pump
Problems:
I finished the harness so i started to calibrate and set up the "things".I have problem calibrating WBO2,i cant get O2 readings...?
This is voltages that webshop sent me in my email,should i try to get this voltages?
wbo2_abs_limit=E4
wbo2_limit_maxt=A0
wbo2_fallback=B0
wbo2_retry_t=06
wbo2_edgetime_corr=BA
wbo2_edgetime_min=50
wbo2_ri_target=00
wbo2_nernstdc_target=7D
wbo2_pump_pw_zero=68
wbo2_calibration=A8 # changed to 66resolved problem
wbo2_heater_pid_kp=46
wbo2_heater_pid_ki=10
wbo2_heater_pid_kd=1A
wbo2_heater_pid_ilimit=80
wbo2_pump_pid_kp=15
wbo2_pump_pid_ki=4E
wbo2_pump_pid_kd=00
wbo2_pump_pid_ilimit=84
wbo2_ri_confidence_scale=80
PROBLEM SOLVED! wbo2_calibration was way too high (started out with A8) and all i was doing is going higher never tryed out to lower it (?!) then i tryed A1 and i get O2 something like 24.7 and i get 20.9 on 66 (hex) so i`m continueing my work...
Work progress:
I got spark,need to set Injector settings and start the engine for the first time.
Curently using stock coil and 60-2 wheel with stock VR trigger sensor,i`ll update it later to some 200sx COP's since i got them in my garage and i heard that they'll do the job correctly.
Update:
While trying to solve the problem,found that Injector on cyl2 isnt working so i rewire it to another FET now it works,engine cranking and want to start,from 7xx rpm goes to 0 and then again to 7xx again to 0...TriggerErrors red button is glowing after few seconds.Engine is haveing spark,using stock coil,stock 60-2 wheel,stock VR....if more info needed please ask!
Plase help!
Here are logs and config files
http://www.vems.hu/files/MembersPage/MilanaPerisic/config.txt
http://www.vems.hu/files/MembersPage/MilanaPerisic/tables.txt
Cranking engine log:
http://www.vems.hu/files/MembersPage/MilanaPerisic/mt_datalog_m20.zip
TriggerLog from Terminal:
http://www.vems.hu/files/MembersPage/MilanaPerisic/trigger_bmw_m20_log.zip