Bro that sound comes from after market clutch...
difference between normal and aftermarket clutch is how quick they stop the flywheel
normal clutch will keep the flywheel spining ...but the after market will stop it immediately and thus it gives you a sound
so its not cuz of short shifter its cuz of performance clutch
thats what i got sound from b16 city with 3 puk clutch and short shifter
experts correct me if m wrong