wondering what peoples views are on cold start valves being disconnected?

S2 with mfi management- low compression bottom end, ported and polished head with kent cam and suspected chipped ecu.. ( ive had the ecu cover off but no obvious aftermarket stamps etc).

the cold start valve is disconnected from meter head and blue block connection disconnected, (a few 'tuners' have told me when they're chipped you cant run the cold start???) someone at some point has also split one of the two wires to the valve (blue block connector) and joined into the brown block connector that I believe should plug in directly below inlet manifold (im guessing temp sender)?

my gripe is that its slow to start- first thing in the morning I can catch the revs and hold it at about 1500 rpm and after a few seconds release throttle and its all good. However if I drive somewhere (lets say a 20 minute drive) and come back to the car after leaving it stood for half hour, when I crank it over it will fire up almost instantly but immediately stall again, then when I crank it over a second time it will take a few seconds of cranking before it fires and if you dont hold the revs itll stall....

sorry for the essay guys!