Audi TT RS vs Audi TT RS

Drag Race.
Audi TT RS Black: Stage 2 Iroz custom file
Downpipe
APR carbon Intake & Inlet 4.
Intercooler
Snow Meth system

Audi TT RS Nardo: CTS Downpipe, Intake & Inlet & Intercooler (No reprog, No tune)

Audi TT RS with OEM File is Faster than the TT RS Black Stage 2 Iroz.

Which will be the reason?
Tell us your Opinions. 🙂
Thanks for warching