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164 runs intermittently 140-160

Adjusting the (normally not adjustable) map sensor is a common way to trick D-Jet with more aggressive cams/over all engine tuning. This has to be done carefully as to many turns on that screw will destroy the sensor. Maybe you should try finding another one, not that easy - I know, and switch.

Are you sure the IPD kit isn't connected in series with the engine temp sensor, cheating the ECU with a lower temp signal than actually measured? The result would be a richer mixture. Whatever method used, I would suspect every connection related to that box. Try to follow each and every wire and check for obvious faults.

Martin
--
'65 121, '73 165






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