I'm running a smoothed airbox with Green Cotton. I found smoothing the airbox made more of a difference than the air filter for performance but the filter allowed me to hear the turbo and DV better.

What the green panel made your turbo spool louder?
 
What the green panel made your turbo spool louder?
Yep seemed to - even before I had a remap. Seems to flow well too - have seen 222BHPs worth of Gs through it on the motorway around Christmas on my Liquid Guage. I have 98 Ron APR Stg1 set.
 
Last edited:
Smoothed first then panel filter. I suppose the smoothing could have made it louder - just assumed it was the filter. Did them within a couple of days of each other a few months back.
 
You might as well do both seeing as smoothing the airbox is free. It just takes time and elbow grease! There are guides somewhere.
 
I'm looking at smoothing my MK4 Ibiza Cupra 20VT airbox but i was going to get a Green panel filter, can't find one for the MK4 though????

Anyone got a link?

Cheers!
 
Last edited: