hey i just got an o2 housing with a dump to atmosphere... i have the 02 sensor for the wideband welded in right on the downpipe close to the 02 housing... my question is will i be able to tune it acurately while watching my wideband, because at boost the exhaust is dumping straight to atmosphere and not going back into the exhaust...

 

If I were you, Id reroute that to not vent to atmosphere... Just a suggestion. Get the dump tube.

 

your wideband is supposed to be a minimum of 30" from the turbo