Rb25Det S2 Hessitates To Rev Up From Idle When Hot

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Hi everyone, I noticed my rb25 s2 (nissan cefiro a31) seems to be a little sluggish to rev up from idle in neutral. It sort of stumbles before the rpm climbs when I step on the gas. This only happens once the engine is warmed up and driven for a while. I already cleaned my TB ans IAC valves. Timing also adjusted by my mechanic. Engine is stock with open pod filter, aftermarket turbo manifold with 1bar wastegate and gtr fmic. Is this common when the air intake gets hot? I dont have a heat shield but will fabricate one soon.

[koduRB25det]

check your coolant temp sensor/switch resistance when car is hot. must be low. ign off disconnect the coolant temp switch and start the car[ when it hot] and rev it. see any different...

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Ok thanks bro. will try it. since my IC pipes are routed right over them, the guy installing the pipes could have knocked it. Thanks!

Btw, can the afm readings get thrown off if it gets hot?