mine made a fair bit of difference in the 02sti. it was definately louder (bov) but coz im a ricer, i still went out and bought an HKS SSQV.

My 07 STI made a huge difference.

I can hear the air intake and the bov 10 fold louder than stock.

I also have a K&N Panel filter installed.

yeh as i said - made a difference when i did it to my then stock STi... I doubt the boost difference the STi's run to the wrx would be the prob..? nor so much the paper filter over the K&N one (i had a K&N drop in filter aswell)

weird...

Mine is bog stock, standard exhaust and airfilter and with the resonectomy a distinct induction noise and bov can now be heard.

Very strange you noticed no difference on your mates...

Sorry to bring up an old thread, but did any off you put on a Intake elbow? or just leave it open? http://www.raceweapons.com/catalog/Intake-Elbow-54.html

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Aint nuthin to it but to do it!

I just used a small bit of plumbing pipe which was flared at one end from bunnings that was just long enough to go from the airbox into the guard.
Seems to do the trick.

i did it to mine put a pod on it cant hear fuck all only when its got more then 8-10psi of boost before you can hear, plus i got my sound system out loud any ways so lol

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Chinese Mexican
[SIGPIC][/SIGPIC]

Just leave you're intake funnel where it is and leave it open - Doesn't make any difference.

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TD06 - Oink.

i beleive pete tran did some data logging with/without the resonator, and the ecu was definately seeing more air, but was over-correcting it back in the tune.

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Long live the WRC

ah true, just thinking that Elbow would be good too have

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Aint nuthin to it but to do it!