Are you confident the car is what the seller said it was? If not check things like the ECU. Does it have the right ECU for a federal lean burning VX? Because lots of guys have modded these OBD1 cars with different ECUs to try and generate more horsepower.
Have you located a factory shop manual for the VX? They're often available for free online... the full 1500 pages. Lots of details in those that can be helpful.
james
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See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.
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