Mham2k said:

I have an old autometer boost Gauge that was in this car when I bought it and a new omnipower 4 bar map sensor that I installed about 6 months ago.

The boost Gauge is consistently 5 psi higher than the map sensor.

Example boost Gauge 20psi vs map sensor 15psi.

Which should I trust?

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ThunderChild said:

Not to thread jack, but how about when the boost gauge uses a MAP, like the Innovate MTX boost gauge I have, and the omni 4 bar from ecmlink doesn't work at all regardless of how it's hooked up?

I'll make my own thread once I've done more testing, but I wouldn't just automatically assume the omni is right before checking a few things.

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