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?
The details of your Genboard:
Board_version=v3.3
Serial_nr= 1036
pump-= 4.15V
wbo2_pump_pw_zero=0x68
pump+= 4.31V
this is my config:
> 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 - i tried this one with larger value,no results
> 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
Heater is working,the sensor is little hot when i touch it after some time.While sensor was outside,not in exhaust,while i was assemblimg the unit i saw some readings,but now when everything is ready and i got all harness done and sensor in the place where stock sensor was,no readings.
How is possible that i had AFR reading at page2 after some time (mlp02),heater was on,so instead of geting O2 i get AFR readings,Engine off, Like this:
...
AFR:20,98 O2:??.?
AFR:9.09 (or ??.? this is target afr or?)
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...