Before:
Stillen Z-Tube
Stillen Airbox
(Windows Up)
(Windows Down)

After:
Stillen Z-Tube
Stillen Airbox
Motordyne 5/16 Copper Isothermal Plenum Spacer
(Windows Up)
(Windows Down)

Edit: Spacer installed, videos up! Before/after were both at the same location, virtually same conditions, enjoy! I can't really tell any difference in sound.

So right after it was installed, I was just kinda like, eh, did I really spend $200 on this. I was driving on small roads and in traffic so I didn't have a chance to really gun it.

I finally got a chance to gun it from a dig, and I literally said "Holy Shvt" out loud. I can feel the gains.

im anxious to see what the comparison is with the spacer. if you could make sure to take the clip at the same location so we can get a direct comparison.

Definitely, I'm going to try and be at that same parking spot.

After videos are up!

i cant really tell any difference. but im sure thats not why you got it. hows the performance?????

all you ***** must be deaf or something...i can deffinantly tell a difference in the sound!

This may help, SOUND

there isnt a noticable sound difference..... especially in a video. i have a 5/16 plenum spacer and i couldnt tell any difference at all (in sound that is). performance gains are obviously there, as anyone with a plenum spacer will tell you.

what exactly is tihs!??

reset your ecu man

What do you mean? That's going to affect my sound? I've been meaning to reset it just been lazy, but I don't see how you deduced that I didn't reset my ECU by just watching those videos.

Even when I installed it on my previously stock G35, I couldn't tell any sound differences. But ofcourse, the last thing I bought this mod was for sound

Now, with my aftermarket exhaust & test pipes, I can barely even hear my intake.

It's a great mod for cheap power!

Just installed mine tonight, holy ****. I went from 50-maybeishouldnttellthespeed in like, 2 seconds. You really notice it and that was just on like a 15min drive.

I havnt gotten on it from a dig though. I'll try it tomorrow after school.