[sjj31]

Just curious installed at the beginning of the season in March, when should these be replaced?

 

[paparazzi]

How much mileage have you put on the car? These are the triple layer ones. I would say unless you're over 4500 miles already you can leave them.

I have triple layer racing intake filters and I change them once a year or every 3300 miles because my climate is very dusty.