Well I swapped it out and can’t blame it on the filter. Anyone who’s ever changed a filter on Nissans horrible (under the dash) location would know what I’m talking about. You have to scrunch up the filter accordion style and shove the filter into a slot half its size, then hope when the filter expands that it fills the opening and is correct. Truly a stupid, stupid design. Well, this Bosch didn’t expand, so for the last 10 months I was driving around with about half a filter with one half being doubled up. The Bosch was so thick I wasn’t able to contort my self with a flashlight to see if it was right. The carquest I replaced it with wasn’t as thick so I could see it seated in the opening. Improved air flow for sure and now it’s actually filtering instead of there being a gap with no filter.