This car is an ECE 190E 2.3-16v, therefore it came without an emission system or oxygen sensor. The stock CIS fuel injection system completely failed. Excessive fuel wash and the destruction of multiple catalytic converters lead to the decision to go with a stand alone set up, rather than pain over the antiquated CIS set up.
The project initially started out as an attempt to see how simply a stand alone could be set up. The engine ran ok after this half-assed attempt, but the drive-ability was piss poor. Idle sucked (no IACV), tip in sucked (half assed tps)... Eventually this was all replaced/fixed but I would highly recommend skipping the half assed attempt.
The Engine:
2.3-16v. 2.3 liter 4 cyl 16v engine from 1985. Stock it made 185hp. The head was designed by cosworth, the rest of the engine was very similar to the normal 2.3-8v.
The Parts:
Assembled VEMS v3.3 with 90% assembled wiring harness
Sensors:
MAT sensor: sold on Vems shop: http://shop.vems.hu/catalog/sensor-p-115.html
Coolant Sensor: Stock Mercedes - Needs replacement/calibration is incorrect based on OEM resistance curve
Motec TPS
Fuel
Bosch 330cc injectors: http://www.fiveomotorsport.com/domestic-high-performance-fuel-injectors/?itemid=1277
SAAB 900 fuel rail: Same cyl spacing as the merc 102
Mallory 4305M adjustable fuel pressure regulator - run at 3bar
Ignition:
Bosch wasted spark coil pack:http://shop.vems.hu/catalog/bosch-motorsport-ignition-p-113.html
Plugs: bosch H8DC
Wires: Off a VW something or other - Need to make a set of custom wires
Jim