How "fine" was it running prior to this ?
I notice you are using a after market fuel pressure regulator, what make is it, and are you running the correct pressure, is it fluctuating ?
A few things to check,
first unless new put in a new coolant temp sensor, blue one side of head at rear drivers side, check plug for it, check phase alignment if not correct it will over fuel dramatically, the scribe mark on the dizzy lip where the cap sits must be perfectly in line to fall dead centre in the "path" projected by the rotor arm, even 1 tooth out is big trouble.
Check the fuel pressure with vac pipe on and running needs to be 3 bar, rising to around 3.6 with vac pipe removed and plugged.
What plug gaps are you using ?, adjust to 0.6mm, if the plugs have become wet at all with petrol they need binning they never will be right.
Is your map sensor up the right way ?, seen it before where they get killed as to look right they are wrong, the plug on it should be down facing as of course will be the vac pipe this must face downwards with a drop in the vac line of around 3-4 inches minimum prior to plugging on the map sensor.
Whilst at it it would be good sense to do the air temp sensor as well.
Are you on a L1 ecu ?, what chip is it, is it right for the spec of the other parts ?, could even be a std chip where someone used a 3 bar sensor for example.
tabetha