Author: Ecomatt
Subject: K & N filter or not
Posted: 26 Jun 2018 at 8:53am
The actual increase in power from just a drop in filter is going to be almost zero. Plenty of tests have been done that show that aftermarket filters do not flow anymore than the or paper filters. Bob is the oil guy did one and it showed that just from the filter there was no increase in power and the k&n actually had a higher pressure drop than the std filter. The main restrictions on the intake is the intake design itself. If you want more airflow you would do better fitting the air box from the ST with two inlets. I did this on my 1.6 ecoboost Focus and kept the std filter and it worked very well. If you look at the highest marques like Ferrari etc they all use paper filters on their engines which speaks volumes about the aftermarket filters.
Subject: K & N filter or not
Posted: 26 Jun 2018 at 8:53am
The actual increase in power from just a drop in filter is going to be almost zero. Plenty of tests have been done that show that aftermarket filters do not flow anymore than the or paper filters. Bob is the oil guy did one and it showed that just from the filter there was no increase in power and the k&n actually had a higher pressure drop than the std filter. The main restrictions on the intake is the intake design itself. If you want more airflow you would do better fitting the air box from the ST with two inlets. I did this on my 1.6 ecoboost Focus and kept the std filter and it worked very well. If you look at the highest marques like Ferrari etc they all use paper filters on their engines which speaks volumes about the aftermarket filters.