After reading about the pochargers i was going to add a comment but it would have taken it off topic so im post it separately 
  
Anyway... I have been looking at these forums about popcharger thingies 
  
but I honestly cannot see the point of them...unless it is just for noise and ASW'ing 
  
even with those heat shields they are more of a "warm air intake" than anything else!  
  
I know you get a direct airflow from the front, but this is the same as before in the encased box filter. 
  
the cone then sucks air from the around and sides and I think it is more likely to suck air from the engine side... even with the heat shield so the air temperatures are going to be a bit higher... 
  
The big plastic box I think is more likely to prevent warm air into the system and the air come directly from the front, hits the filter and goes through...  
SO I think getting a high flow panel filter would be better in this case... and perhaps thermally insulate the box 
  
I imagine noise-wise it is better but performance wise it makes little or worse difference... Has anyone got actual data showing improvements in performance ? 
PLease convince me...or sell it to me...  
  
debate please ... if you show me good data (independant data) i might consider investing in one... but the science has to be proven... 
  
  
basically my stance is that I think the original set up is a good as these popchargers... thingies for performance...  
and that OEM with a high flow filter will be better than a pop charger 
for performance... (I am not so bothered about the noise...)