marklemac

Hi there,

Just fitted a SECS 1004 unit last week and noticed today that the idling boost figure is different between the SECS unit and the boost guage I have.

On idle the SECS unit says -09.2 , and the boost guage shows -16

Not sure if they are different on + boost, as I can't watch the guage and the SECS at the same time :-)

Could it be that the boost guage it tapped in from the wrong point ? Mine is tee'd on the left hand side of the engine, but I have seen posts saying you should tee off from the pipe to the dump valve ?

Thanks,

Dark Blue Mark

What units is your vac reading in?

Assuming your vac gauge is well calibrated, I would believe that. The SECS one will be analog to digital conversion, so more room for error IMO.

Its fitted in the right place from what you describe.

MB

marklemac

the autometer gauge is reading PSI, the same as the SECS.

Elmer Fudpucker

Hello mark

I think I'm right in saying that your secs monitor is measuring vacuum in psi

but the autometer gauge measures vacuum in Hg's and only reads in psi for
+ pressure(boost)

Jon

marklemac

Ah,

Well spotted that man :-)

Thanks Jon

Dark Blue Mark

Thats why I asked

MB