jimlj

Ive installed a boost gauge and a pyrometer. The pyrometer is fairly straight forward as to the information I wanted, but what is the boost gauge telling me? How do I increase boost or do I even want to? I was a little surprised at how low it is reading at cruise speeds, but searching the forum it appears it is close to what others have seen.

At WOT I get right at 20 psi boost and 1000* on the pyro. Going up a long steep grade at 75 MPH I was holding 10 psi and 1000*
At 65 MPH on fairly flat ground I get about 2 psi boost and 650* on the pyro.

thrashingcows

Those number seem to be fine. You don't want much boost while cruising or you will loose fuel economy.

oliver foster

Those are stock numbers right there.
The 20 PSI at WOT is actually on the higher end of stock #s.

Montana2x2

If you increase fuel you will increase boost. With a stock turbo if you get over 30 or 35 PSI you will just be blowing hot air into the intake. If you get really carried away with fuel/boost then you need to do head studs etc to preserve the head gasket. I'm sure someone else will be able to tell you when you need to worry about this.

1972RedNeck

Pre or post turbo EGT's? I was going to assume pre-turbo, but we all know what assuming does...

jimlj

Those are pre turbo temps.
If I were to start tweaking the fuel pump, does the drop in economy start right away?

1STGENFARMBOY

The drop in fuel economy rides on your right foot, and the added power is like the devil and forces you to mash the go peddle.

1972RedNeck

If you give yourself a touch more fuel and a little timing, your mileage should increase.