[Freak]

will the gain/loss be noticable with or without the 02 housing?

 

[yelbou]

I would say go for it IF you're not planning on upgrading the turbo anytime soon...it should pick up a few hp.

 

[e36 m3]

its alot of work though.. but im thinking about doin mine

 

[Exhaust Depot]

You will get about 10hp with an o2 housing. This is what srtgurl got when she installed it.

if yoru running 15psi, you will NOT make 10hp. 18-20 then yeah.