This is an Indian built Denso ECU for a Maruti built Alto with the G10B engine. The ECU is almost identical to a Jimny 81A20 ECU, sharing the same PCB but with a few less components than the Jimny. The 70MFD0 appears to be a Maruti part number but I've also seen these ECUs without the dual part numbering.
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1984 Suzuki SJ413K pick up, 1.6 16V Baleno engine 2000 Suzuki Vitara 1.6 8V, many mods 2004 Suzuki Ignis 1.5VVT 4Grip 2006 Suzuki Jimny 1.3VVT JLX+ and many more.
