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The car is a BMW Bavaria 3.0S from 1976, chassis model is E3. Below are details on the install of a VEMS Genboard on the engine. http://savarturbo.se/stuff/images/sandgren_e3/bmw_3.0_summer_tires.jpg ---- '''Engine information''' * Stock M30B30, a 3.0 litre inline 6 cyl, about 180 hp with stock carburators * 6 x 380 cc/min fuel injectors, high impedance from E34 M5 * Stock distributor ignition * Stock coolant temperature sensor is ok for use with the Genboard * Potentiometer style TPS (got it from Farnell) * Custom intake air temperature (IAT) sensor mounted just after the throttle plate, sensor is NTC from web shop '''Plans for Genboard control''' Custom harness * Electric fan * Idle air solenoid * Sequential fuel injection '''Trigger setup''' 60-2 wheel from a modern M30 (BMW E34 535 -91) with stock VR sensor. '''Genboard configuration''' To come. ---- '''MSD p/n 8224 "GM 2-Tower Coil Pack"''' OK to use with the IGBTs ? * http://www.msdignition.com/coil_blaster_9_8224.htm * Low resistance (0.35 Ohms). Not so low inductance: 4.2mH According to the PDF instructions they can be used for stock replacement on some vehicles, in some cases using ballast resistors, and ultimately the MSD DIS-4 CDI unit is suggested. Pure CDI coils typically have much lower resistance (<0.01 Ohm), this is a half-breed. Will it work as a regular inductive coil? Can the IGBTs handle that? * 14V / 4.2 mH = 3.3 A/msec so with max 2..3 msec dwell you should be OK. * Check if the spark energy is suitable for you at 2.2 msec it's ideally I*I*L/2= (3.3 * 2.2)**2 * 0.0042 / 2 = 111 mJ (appr max 100 mJ in realty)
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