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Summary of change:
Building a '''Porsche 3,0l 944 turbo''' Now the details that affect VEMS specs and installation. *original Bosch Motronic sensors will be used **water temp x2 , oil press, knock **exceptions are MAT and MAP, these will be from VEMS web shop *original wiring loom will be used *fuel injectors are SiemensDeka **Static Flow Rate (GAS): 86 lb/hr @ 43.5PSI (300kPa) = 903cc/min, 10.88g/s **Coil Resistance: 2.35 Ohms / Low Impedance / Low-Z *Ignition for starters wasted spark, with option to COP *TPS will most likely be the one that comes with ITBs *For trigger see below ---- Configuration: MembersPage/PeteKrgr/Config Tables: MembersPage/PeteKrgr/Tables Pictures: MembersPage/PeteKrgr/Pics History: MembersPage/PeteKrgr/Oldstuff ---- '''Trigger''' - ''Both are VR'' PPaadam Porsche 944 turbo Trigger: * 132teeth on flywheel -VR sensor * Crank home (1 pin on flywheel 24.5 tooth, ie 66.8 dec BTDC 24.5 x 2.7272 deg, if i remember right) -VR sensor. * No cam sensor * ''' And no missing teeth anywhere!''' ---- '''Shopping list''' Assembled v3.3 controller * 1-wire interface no * ignition driver 4 * Knock and EGT yes * LCD and PS2 yes * MAP connection 400kPa onboard (5/3mm pneumatic) 'I'd recommend 6/4mm connection' PPaadam * mounting-style screws * PowerFlyback yes * primary_trigger '''VR''' * secondary_trigger '''VR''' ''Should be "auditrigger"' PPaadam * EconoSeal36-Wire * Econoseal18-Wire * EGT sensor (K-type) Size 2mm * K-thermocouple connector ** mounting-style panel-mount ** ''Sex pair '' ** mounting-style flyback ** ''Sex pair '' * Wideband O2 sensor * Wideband connector ** With wire with crimped wires * MAT sensor * Pneumatic valve 3way ---- '''Specifications:''' Board_version=v3.3 Serial_nr= 748 pump-= 4.16V wbo2_pump_pw_zero=0x67 wbo2_nernstdc_target=0x86 pump+= -3.3mV/200 Ohm AREF=4.9V (C103=1nF, no D100) '''Firmware 1.1.24''' ''1.1.24 or 1.1.25 seems like a good choice for 132+1'' Auditrigger was initially according to PhatBob's instructions: EC36#27 VR+ ( primary ) = CRANK speed sensor EC36#13 VR+ ( secondary ) = reference sensor (whel HALL!) EC36#26 VR- ( primary & secondary ) but changed to EC36#27 VR+ ( primary ), = CRANK speed sensor EC18#12 VR- ( secondary ), = VR reference sensor EC36#26 VR- ( primary ) EC36#26 VR+ ( secondary ) after discussions with Miska. So installation instructions should be updated considering this part. ''Trigger is: 132+1 per crankrot, or 264+2 per camrot (132+1 means you have 66 pulses on crank, and 1 pulse on cam). But above says differently'' ---- Here's a screenshot of my triggerlog made to a graph, nice and steady signal. So VEMS can be installed to a 132+2 system with 2 VR sensors and without cam home hall sensor. Firmware usd is 1.1.24. http://kotisivu.dnainternet.net/sakrkorh/trig132-1.png
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