throttle response problems at start up for s14 sr20

[irishimport247]

how can i find out for sure what the problem is before i just go buying parts i know the fuel pump is good also ran injector cleaner through the fuel and it didnt work so im thinking its either the fuel filter or injectors r bad i dont think its the tps sensor bc its only at start up. it starts fine but when i hit the throttle it takes a few secs to rev up and almost wants to die but if i rev it for a little bit it goes away

[curbhuggerrps13]

vacuum leak down? mafs needs a cleaning?

[irishimport247]

ill try it and see if it works

[Mishkin_707]

Disconnect your temp sensor see if then start it and see what happens, that's my fix for everything.