running a 8 bar cleaning gun with a 8 bar mini compressor

hi can you give me a little bit of help / guidance i am a mobile car valeter and have just brought a cleaning gun that works off compressed air 8bar so i also brought a air compressor to go with it
because i work from a small car i went with a mini 8bar portable compressor that has no air tank that just runs constant all the time so to keep room in my car for other cleaning items hover etc
so how to i keep the pressure constant without it dropping the the gun is in use as there is no gauge on the compressor to say what its at

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Bill says...

Hi there. 8 bar is a measure of pressure. You can have a compressor deliver 8 bar at .1 CFM, or a bigger compressor deliver 8 bar at 50 CFM.

Your blow gun uses a certain pressure and a certain flow of air.

You will get about 4 CFM of compressed air at 6 bar for every single HP of electric compressor motor.

You need, first, to find out what flow your gun needs to work properly, and then figure backwards from there.

Cheers,

Bill