Guys.....

In need of more advise!!

Firstly. Would a performance panel filter like K&N or Pipercross make a difference to performance on my 2001 2.0 Focus Zetec? I have modified the airbox in that there is a direct cold air feed......Just wondering about a performance panel filter now.

Secondly. I have a hole in my exhaust. It is mid section of the exhaust, its not bad as in it making a terrible noise but you can hear it and when I jack the car up and felt around I could feel a slight blow.....Would this effect performance??

Thanks in advance for any help.