Join Date: Feb 2002
Location: Sydney, Australia
I found on my EF XR6, that with the pod filter, the car wasn't as efficient nor as fast.
Putting a K&N Panel Filter back in solved this problem and it wasn't only faster or more efficient, I found that there was not as much latency when putting your foot down, as the design of the panel filter enclosure took air straight from the front and didn't rely on trying to suck air in from the pod filters general environment.
I think the car was faster due to more cold air getting into the engine bay. So if you can modify it so that your pod filter gets sufficient direct cold air (hard to do on EF and EL due to ABS sensor), even then you'd see barely any difference at all - performance wise.
Just my 2c...