I am looking for a good place online to buy guages. I ordered one of the guage pods and I am looking for something to fill it with I know I want a boost guage but not sure what other one to get. Should I consider an air fuel guage if I am considering geting a MAF kit that will have the ARM1? From what I can see that would be a waste of money so I would like ideas on what other usefull guages I should consider.

Thanks Tom
88 951S

 

personally, i wouldnt go with the boost since your 951 already has one....unless the MAF kit makes it dead....

air fuel would be one i would definately get....or a EGT

could get a vacumm gauge, fuel pressure gauge

but if it was me, and i already had a boost gauge, air fuel and fuel pressure would be my choice...

thanks,
space

 

The stock boost gauge on the 951 isn't good enough when you're trying to set a boost controller for 17psi. Stock boost gauge only goes up to 1 bar boost, or 14.5 or so psi....

I would go for a oil temp gauge + boost gauge if you're going to get the MAF.

oh and try http://www.egauges.com

 

Ah Ha! There is someone that knows that 1 Bar is only 14.5 psi and a little change. Most people think 1 bar = 1 atmosphere = 14.7 psi.

 

Too bad the stock gauge is crap. Mine, at 12psi, showd about 9psi on the stock gauge. I have heard the same from many.

Not to mention that when I was tuning, the stock one was Pegged, and I was running 23 PSI thinking I was set at about 16psi.

Could have been bad. Get a good VDO or Autometer boost gauge.

 

Yep.

1 bar = 100,000 Pa.
1 atm = 101,325 Pa
1 Pa = 1N/(m^2)

 

Ok thanks guys but I have another question. What is In.Hg. scale that is being shown at this web site http://www.egauges.com/vdo_mult.asp?...&Series=Vision ?

Tom
88 951S

 

Inches of Mercury. Pretty common in aviation circles, never really seen it anywhere else.

1 atm = 760 torr = 760 mmHg = 29.92 InHg.

To get inches from mm you just use the standard length conversion, 1 inch = 25.4 mm.

If you ever listen to an ATIS broadcast (its automated airport info stuff broadcast on the radio) they always give altimeter settings in InHg. "Temperature 10, dewpoint 6, altimeter two-niner-niner-seven" or whatever.

--
Semper Fi
Cpl SH Won
Wpns Co, 2nd Bn, 24th Marines

 

Barometric pressure is used in many other areas such as weather, global positioning, industrial processes, etc. - a lot more than you would think. If you see barometric pressure dropping like a rock you better run for cover because a storm is coming.

If you are trying to see how accurate your stock boost gauge is (with the engine not running) you cannot use most of the broadcast pressure readings from local airports/weather stations. They use a conversion formula that adjusts actual local pressure to adjusted mean sea level for avation altimeter purposes. I.E. let's pretend our airport is at sea level rather than 5,000 feet high.

After taking all this barometric and Bar adjustments into account, my stock boost gauge was spot on ..... well looked like it but it is pretty hard to read on such a small dial face.

 

Anyone interested in guages should also check out North Hollywood Speedometer since they have Porsche expierience. They can repair your broken Odometer too!

 

Ok more guestions!
What do you think which is more suitable between a boost guage and a turbo guage is it just a matter of personal preference? What size and kind of tubing will I need and where should it connect?

I think for the second guage I will go with an oil temp like suggested. Should I go elecrical? Do I need a sending unit or dose it connect to something allready on the car?

Thanks Tom
88 951S