finally i got the guages through that i ordered from ebay, was from the same guy the group buy was from.

Now i was sure i'd asked for these to be in psi however they've came in bar.

 

Whats the difference and which is better to have?

it's just another way of measuring pressure. I think it was 14.7psi = 1 bar.

Yeh, many offer them in either. I personally prefer psi as you have a more detailed scale.

iv only ever really spoken in psi thats all and i now have oil pressure, water temp and boost in bar :(

you have water temperature measured in bars?

The bar (symbol bar), decibar (symbol dbar) and the millibar (symbol mbar, also mb) are units of pressure. They are not SI units, nor are they cgs units, but they are accepted for use with the SI. The bar is still widely used in descriptions of pressure because it is about the same as atmospheric pressure.

 

The pound per square inch or, more accurately, pound-force per square inch (symbol: psi or lbf/in² or lbf/in²) is a unit of pressure or of stress based on avoirdupois units. It is the pressure resulting from a force of one pound-force applied to an area of one square inch:

 

1 psi (6.894757 kPa) : Pascal (Pa) is the SI unit of pressure

 

Generally the psi scale is in UK cars.

 

There's always one smart arse :rofl:

The bar (symbol bar), decibar (symbol dbar) and the millibar (symbol mbar, also mb) are units of pressure. They are not SI units, nor are they cgs units, but they are accepted for use with the SI. The bar is still widely used in descriptions of pressure because it is about the same as atmospheric pressure.

 

The pound per square inch or, more accurately, pound-force per square inch (symbol: psi or lbf/in² or lbf/in²) is a unit of pressure or of stress based on avoirdupois units. It is the pressure resulting from a force of one pound-force applied to an area of one square inch:

 

1 psi (6.894757 kPa) : Pascal (Pa) is the SI unit of pressure

 

Generally the psi scale is in UK cars.

 

There's always one smart arse :rofl:

 

I agree:D Or I whole heartelly concure.

iv only ever really spoken in psi thats all and i now have oil pressure, water temp and boost in bar :(

 

to be honest, once it's set up, you get to 'know' your gauges so the units are irrelevant - as long as you notice if/ when one of them is showing an abnormal reading...