phase2 02 extension housing

[RedtopTech]

Has anyone tried this housing vs. one without a deviding wall? What kind of power gain/ boost response should one expect from this mod. Also does this extension housing have threads for the small 02 sensor or for the larger 02 sensor?

[gpeele]

all that i have seen have threads for the larger o2 sensor

[DJPimpFlex]

I have one with a divided wall and it seems to be good. Good spool and tons of power. Kinda hard to see what that part did exactally becuase I put all my exhaust on at one time, but it was definatly an imporovement.

[-usmd-180sx]

:doh: this has been covered a billion times