im gonna purchase a set of autometer c2 electrical gauges (boost, egt, oil pressure) and i was wondering if its ok to get the 0-30 psi boost gauge istead of getting the vac/boost gauge...i like the uniform look where the needles all start at the same angle...thanks!

 

sure why not...

only difference is you just wont see a low vacume or high vacume reading to indicate any problems...

When my ringlands went out, my vacume changed a little....

but your probably safe in doing just the positive side... (boost)

 

what is a good vacuum reading when your at idle? my gauge reads at 20 vac at adle is that bad? i heard 15 was the proper reading

 

I sit at 22@idle on my autometer 30/20 boost gauge....

 

20 is perfect. that is what mine is.

 

ya there are a a couple diagnostic procedures you can do with the vacuum readings. they are described in the chiltons (yuck) manual from autozone. definitely get the vacuum gauge.