I'd like to see some installed wastegate downpipe pics so I can clarify how everything goes together, preferably with the lovefab minime manifold. Sorry, i'm still a turbo newb.

 

 

 

what is the difference when the dumptube goes into the exhaust?

 

It's legal.

 

If the gas bypasses the turbine, it doesnt spin it. It doesnt matter if dumps to atmoshere or back into the downpipe, it hasn't imparted its energy into the spinning of the turbine. The downside to dumping back into the exhaust is higher backpressures on the system, upside is potential eco-friendy-ness.

 

And it's quieter to dump it back into the exhuast, alot i've heard.

 

yup

 

You might need a larger wastegate to preserve enough waste flow into higher backpressure in exhaust (relative to atmospheric dump). If you can't flow enough through the wategate, you will overboost.

 

But then you don't get that awesome whistling sound!