Open wastegate dump?

[Project240]

Who has experience with open wastegate dumps? Is it really that obnoxiously loud, and is it worth the performance gain? I'm debating over whether to go with a divorced O2 dump pipe that plumbs back into the exhaust, or one that just dumps the wastegate exhaust straight out. Is the difference in performance worth the increased noise level?

*I like the sound; just not sure if it's too loud for something that'll be driven every day.

[ILikeMy240sx]

I drove my friends car that had a gt30 turbo with an open wastegate dump and holy chit that thing was loud. It sounded like a jet taking off when his wastegate opened up. I couldnt even hear the tires break loose and squeal when it opened up.

However if this is a street car, Id stick with the closed dump tube... I hate it when street cars are obnoxiously loud.

[driftin_sr20det]

Don't go open gated, like ILikeMy240sx said its just too loud. Not soo kewl for daily driving. Just get a divorced dump, I really like mine. Just make sure its the kind made for US models or they won't fit. They'll hit the steering column and you'll be f'ed.

[DrifterProdigy85]

Really, if your daily driving you wont hardly ever hear the wastegate if you dont boost that much. I know my daily driving habits are only revving to 3k-3500rpm and being lite enough with the throttle never hitting above 5psi. I dont see an open dump being that big of a deal.