1990 civic wagon d15b revs to 5600 or5700

Derrick22

New Member
I have a 1990 civic wagon with a d15b with a 1.6 non v head (p2a-6) with Obd1 conversion it has a chipped p28 it revs to only 5600 im thinking it’s the ecu ima try my brothers ecu he has a 92 civic sedan with a d15b7 non v I believe but lmk what I should check before trying the other ecu
 

nd4sped

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Swap out the ecu for a good known unit and see if it resolves the issue.
 




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