1984-1992 BMW E30 M20 2.5L 325i DME ECU Green Label Computer 1714998 OEM #3346E
Brand: Bosch
OE/OEM Part Number: 1714998
Up for sale is a used 1984-1992 BMW E30 M20 2.5L 325i DME ECU Green Label Computer 1714998 OEM #3346E.
Coming from a 1988 BMW 325i with 165k miles, VIN: WBAAD2300J8844121 (Misc BMW E30 - Row 3). Was a daily driver and was only removed to do a V8 swap. Some additional information from the forums:
In 1985, the M20B25 replaced the M20B23. The M20B25 has a capacity of 2,494 cc (152.2 cu in) and initially produced 126 kW (171 PS; 169 hp). It has an upgraded cylinder head (known as "885"), a bore of 84 mm (3.31 in), a stroke of 75 mm (2.95 in), a compression ratio of 9.4:1, a redline of 6,500 rpm and uses Bosch Motronic 1.1 engine management.
In 1987, a catalyzed model with Motronic 1.3 engine management was introduced. The compression ratio was reduced to 8.8:1 but thanks to the more sophisticated electronics power remained nearly as before, at 125 kW (170 PS; 168 hp). The uncatalyzed engine was kept in production for Southern Europe and other markets where unleaded petrol was not regularly available.
"The main differences between the 325e and the 325i are in the engine. Although both models have engines from the same M20 family, the 325e has more displacement than the 325i (2.7 liters vs. 2.5), but drastically less horsepower (121 vs 167). The "e" stands for "eta" (the Greek character for efficiency) and was the theme for the 325e, which was conceived during the gas crisis of the late 1970's. However, the 325e's long stroke motor helped contribute to its large torque output, and it actually has a higher torque rating than the 325i (170 vs 164). The "e" has a low 4800 RPM redline but a relatively flat powerband to compensate and a very conservative 2.93 final drive (2.79 for the earlier models) to allow for low freeway RPMs and increased gas mileage. In contrast, the sport oriented 325i was equipped with a much shorter 3.73 final drive (4.10 in some automatics) and a much higher revving engine (redlining at 6700 RPM), despite its smaller size. In contast to the 325e, the 325i has a hotter cam, dual valve springs, larger valves, larger intake manifold, larger throttle body, larger exhaust manifolds, dual pipe exhaust system, and self-diagnosis capabilities (through Motronic 1.1 and 1.3)."
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