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I have revived my father's 94 4cyl DOHC MX-3 and I am wondering why the greddy oil gauge is jumping between 0 and say 25 while boosting?
I hear no pinging.
Narrow band Greddy 02 also seems to stop displaying when this happens.

Everything is stock except the Ihi turbo from a mercury capr, the ic/piping, RRFPR and larger blue top injectors and larger fuel pump.

I am trying to make this stable enough for my wife so I don't have to worry much about it while I maintain my BPT.

Thanks

nolig2278 wrote:I have revived my father's 94 4cyl DOHC MX-3 and I am wondering why the greddy oil gauge is jumping between 0 and say 25 while boosting?
I hear no pinging.
Narrow band Greddy 02 also seems to stop displaying when this happens.

Everything is stock except the Ihi turbo from a mercury capr, the ic/piping, RRFPR and larger blue top injectors and larger fuel pump.

I am trying to make this stable enough for my wife so I don't have to worry much about it while I maintain my BPT.

Thanks

That is super low. What does it read at idle? Where is the probe for gauging oil plummed into? I bet you have a bad ground where you have your gauges wired to. Double check the power and ground.