Airflow restrictor, conic filter

This ring will reduce the inned diameter from 76mm to 46mm.
For carburatoor purpose, intead of jet change this will be the solution.
Personally i was in need of it because i'm actually nunning an lpg aspirated system. but it;s easy to find a 76mm filter everiwere in the world.

I've printed it with infill 100 using PETG. At 100% scale the mesure are 77mm diameter outer circle, 46mm diametre inner circle and 5mm the hight.