Volvo S70 T5 Turbo
Motronic 4.4 Ecu 19T 21psi cca 340Le
Engine: B5244T LPT 9:0:1
2445 ccm
5 cyl
Na camst
Rs500 intercooler
S60R Fuel injectors 42lb
Walbro 255 Lph pump
TD04HL-19T Turbo
3" exhaust
Msd ignition(distributor)
New Project: 1998 Volvo S70 B5244T + vems V3
Engine: B5244T LPT 9:0:1
2445 ccm
5 cyl
Na camst
Rs500 intercooler
S60R Fuel injectors 42lb
Walbro 255 Lph pump
TD04HL-19T Turbo
3" exhaust
Volvo T5 COP's Bosch 0221604001
Stock 60-2 flywheel, VR sensor
Stock CAM HALL sensor
Ignition outputs
- cyl 1, EC36/35
- cyl 2, EC36/33
- cyl 4, EC36/36 is suspicious looking at the individual power
- cyl 5, EC36/24
- cyl 3, EC36/34 Sparkplug is sooty, not as clean as other sparkplugs...
Cylinder 3 is sooty in ec36/34
note: dwell is 2.3 msec, does not grow with MAP (dwellmap=0)
dwellmap is 0 because we don't see any change in ignition power with higher dwell than 2.0 msec
ign TDC-delay (primary trigger settings) is too low !
- ign-tdcdelay = 20 is wrong....
Correction hint: 144+20=164 crankdeg = 15*6 + 74
- first trigger tooth should be 15
- "TDC after the trigger": ign tdcdelay = 74 crankdeg
- of course, rotate ignoutputs by 1 to match the desired spark position
- verify by strobe
* Strobe
* cyl 1, EC36/34 --> 710 deg it should be 0
* cyl 2, EC36/35 --> 650 deg 144
* cyl 4, EC36/33 --> 600 deg 288
* cyl 5, EC36/36 --> 520 deg 432
* cyl 3, EC36/24 --> 430 deg 576
Validation shows possible problem
- sectrig HALL-dirac filter: preferrably disable it !
- iac ignadv change should be lower (+2, -6 crankdeg or similar; even +1 -3 or crankdeg is more than enough is IAC air-valve is set up properly, +0 -0 should be good too)
With hall dirac filter the problem shows less times
Benchtest
We applied some changes to the config, because "TDC after trigger" = 20 crankdeg is not a good setting (see above ... Since we changed 144 crankdegrees, you might need to rotate the ignoutput sequence by 1 event, strobing will show it).
After that, we benchtested the config.
We benchtested the ~160 kPa and 3000 .. 7000 RPM range most extensively where your cylinder seems to misfire. The ignition and injection outputs fired properly.
Test config: http://www.vems.hu/files/VolvoS/tested-v3.3_u004521-A-2013.05.06-12.