HP: Gain or Lose

Pacaveli

Registered
Is it correct that if you change the OEM filter to K & N that you could and will lose HP? Will it gain the added HP if you get it remapped along with the filter. I have a full 4 to 1 Hindle system and I am thinking of adding the filter along with getting it remapped. Looking for knowledge b4 I make the wrong move.
 
I've heard both sides. Some say they dynoe'd and lost some say they gained. Basically, the ONLY advantage to a K&N/BMC filter is that they do not have to be replaced .. only cleaned.
 
If you go aftermarket, go with a bmc race filter and get a custom map. I heard the K&N makes a sweet wistleing noise at higher rpms.
 
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