Well i finally got around to installing the o2 housing this weekend, and i must say first of all that i will NEVER do one again!!!!!!!! Anyway, my question is, will the turbo spool sound louder after the install? Seems that when im cruising and do partial throtle i can hear the turbo spool but its not the normal spooling sound that you hear at full wot.It sounds like a subaru wrx turbo after they install a dp that the turbo is noticeable. Im guessing its gona be louder since the o2 housing is way much bigger inside than the stock. It sound like how a turbo sounds when you run a open dp but its no way near as loud. It doesnt sound like a leak at all bc im holding boost all the way to redline(1.5 bar)

So can anyone comment on this!! It has me concerened bc i dont know if i might have a leak somewhere in the exhaust. I checked the o2 housing, headers, dp and catback and everything seems tight and sealed....

 

not sure what the sound might be but i would say make sure you watch your boost because when i did the install my boost spike was way higher on my greddy profec and had to adjust accordingly

 

do you feel a difference in spool or power with the addition of the o2 housing? also the spool should be louder, unless you are hearing a sound like somone is blowing a whistle you dont have a leak, hope that helps

 

Try to seal the exhaust (muffler tip) while the engine is running to see if you have leaks.

 

I didn't notice a sound difference when I installed my O2 housing.

 

im gonna say that, even though this may work, its a really bad idea. thats a lot of back pressure u would be exerting on your poor car. but if your gonna do it, stick a potato in the muffler and watch it fly!

 

You have an exhaust leak.

 

The "whistle" is more prominent now, but I attribute that to the thinner material of the new housing.

 

Yes i did feel a difference in spool and top end power, it was definitely noticeable!!

Thats what im thinking, since i also have a manifold and now with the o2 housing, the spool sounds louder.


I dont think i have a leak, the car pulls really hard all the way to redline!! If i had a leak which im sure i dont, how loud would the leak be? Is it noticeable?

 

Ron (tigeron) and I did my o2 install on his lift, surprisingly the install was extremely easy and all bolts came loose without a hitch. (Note I have an 03 and the turbo has never been out).

As for the noise, you'll definitely notice more 'wind' noise. The housing is much thinner, and the turbo spools a bit quicker so you hear that more also. I wouldn't be worried as long as you used new gaskets, and tightened everything properly.

My stock gasket was cracked and I could see exhaust gases when I revved the car, or when I first started it. If there is a seriously leak you'd most likely be able to see it.

 

thanks for the info! I used the stock donut gasket as i was not provided one with the o2 housing. So if i had a leak i could not only hear it but see it also correct?

 

you would be able to feel it easier than see it I would think. But over time the buildup of the black residue would be easy to see if there was a leak.

 

Would i have a noticeable loss in power if i had a leak?

 

I would think so, also it would be pretty loud depending on how bad the leak was...

 

ok cool. I really dont hear anything that sounds like a leak, pretty much the sound is a louder spool of the turbo from inside the car, specially when all the windows are up