I know there are more factors than just the airbox. But it helped me drop my ET. .3 seconds is roughly 30HP (from what I'm used to seeing). Obviously it wasn't all from the airbox. Maybe someone put a sticker on my car somewhere and I didn't notice.

 

ok, here is what i vote for...i vote a vendor makes a bracket to secure a high flow stock style filter in the box using the original mounting hardware....it would be simple, just a stamped piece of steel with a few holes in it...and they could sell it for like 10 bucks plus shipping

 

all i did when i did mine, was put an aem DRYFLOW in there, and take the bottom cap off the airbox, and replace it with some mesh which i screwed right back in there.

 

i had the airbox mod and the k&n and xtc cai ..with the airbox mod i didnt notice a difference over the 2 intakes that ive had except for a little better throttle response and the s/c was way louder with the intakes over the airbox mod...

 

i have done the air box mod and then dynoed it and it gave me 213