Drop in Air Filter

[jatleson]

Not looking to make any major performance mods to car. Anyone using AEM drop in filters in the stock airbox? On my previous car, I noticed slightly more power and much better sound with a AEM Dry filter in the stock air box (e90 335 BMW, N54 engine) .

 

[CKeeler]

Not looking to make any major performance mods to car. Anyone using AEM drop in filters in the stock airbox? On my previous car, I noticed slightly more power and much better sound with a AEM Dry filter in the stock air box (e90 335 BMW, N54 engine) .

I use K&N drop ins and it’s not a huge difference. Slightly better fuel economy, but I really didn’t notice any jump in power until I did exhaust

 

[ChaneRZ]

I also use K&N drop in. No CARB approved aftermarket filter yet for California. Don’t want to switch when smog comes.