Testing a Boost Gauge............

[Milky400]

Is there an easy DIY way to test you boost gauge is readiing accurately?

Cheers

[Steve940estate]

Unless you have access to a calibrated gauge them you can only compare it to another gauge. I borowed a good quality pressure gauge and connected the gauges together onto a regulated air line.
I marked off 5 and 10psi on the dash gauge (940's aren't marked) and the new gauge I bought read about the same as the one my friend lent me.