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Summary of change:
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.
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