So after riding in my buddy's 280z during our last local autocross event, I have been craving to see what my little fiesta can do on an autocross course. The next event is on the 14th of July and I need help deciding whether or not to take off my aftermarket intake since it could be considered a performance modification (personally I think there is not too much performance to be gained out it, I enjoy it for the little bit off induction noise it creates) and thus causing me to be a part of a more competitive class. This event is apart of the scca. The average attendance is usually about 30-40 drivers, so the local leaders usually divide everyone up into three classes. Any opinions and tips are greatly appreciated.