Sorry guys I have been offline for a bit. This is what happens when you post after a few beers!

Got all the readings today from INPA and DIS / GT1, the car is going in tomorrow to get the LPG tank removed.

This is what the car looks like:



And these are all the readings from INPA and DIS / GT1, the first pic is of the software I have / use:











































I have a video of the compressor clicking as it tries to kick in:

https://photos.app.goo.gl/pNUVnvWvU8diMNsM9

Thanks in advance for your help! I will take some more pictures of the battery area after I get the LPG tank removed, I also have a new battery that I will fit before doing anything else.

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Current Transport:
2005 BMW X5 4.8is (LPG)
2000 Saab 95 Aero HOT (chipped to 275bhp)
1995 Audi 80 Cabriolet
London Underground

Previously Owned:
Mercedes ML55 AMG (LPG), BMW 540i Touring, BMW 535is, Mercedes CLK 200, Toyota Celica, Honda Prelude, Mercedes 190e, Ford Sierra / Escort / Fiesta, Vauxhall Nova, Rover 214sei, Golf Mk1, Mazda Bongo