Carb restrictor for breakin - v-spec
 

I'm going to break in my v-spec late today. Should I leave the 9mm restrictor in during break in as to not effect the factory settings or switch to the 8mm restrictor I will be using for racing.

Obviously I will switch when tuning, but just for initial break in steps should I leave it alone?

Just break it in like it is then once you can put a race tune on it put your 8mm in it and tune to your likings.