Sounds like the plumbing is OK, apart from being untidy!
Has it ever run properly on gas? Just wandering if something has been disturbed during routine maintenance or if there's something silly like lamb signals applied to the wrong bank.
Its been back to the installer 3 or 4 times since install on 30/1,I've had bullsh*t like its DIS Pack or plugs or leads,so Daz changed them,went back still not running right on gas but fine on petrol,its drawing air and not firing on cylinder 3 was next load of 'dangle berries',got Daz to sort airleaks,changed DIS,plugs & leads again,running fine again on petrol.Took it back to gas man again next load of shite was coolant systems pressurizing so left it with him to sort gas,collected it this afternoon to be told "engine runs and fuels fine when cold,as engine gets hot the coolant system pressurizes and engine begins to idle erratically,possible cylinder head fault,cylinder block fault or both".
Drove 20miles home and car was again running as if drawing air(again).Daz came out yet again and stripped it down to check all gaskets were in place,put it back together and the erratic idle has gone,but will not run on gas but fine on petrol.All the work Daz as done tonight was done at Captain Zoks,where captain ran diagnostics and everything was fine.We ran the car for a good hour whilst there and everything is as it should be apart from the GAS!!!!!!!!
As for anything been disturbed yes ME