New Precision Boost stack

[we4Mateo]

Anybody out there running a new precision turbo with the bullet holes to eliminate the boost stack? What kind of conditions/boost levels caused it in your car with the old turbo and is it now completely gone all else equal with the new style housing?

Thank you!

 

[bmackinnon]

What the hell is 'boost stack"? If it's what I think you are talking about, it's called compressor surge... and it's caused by the turbo compressor operating outside it's engineered range on the flow map (pressure(ratio) vs. flow)... simple pump/compressor physics.... where does this 'stack' terminology come from... because it's misleading and doesn't make sense...

 

[Sweet6]

Or do you mean a ported shroud? The one with the holes on the compressor side?

 

[bmackinnon]

I take it to mean the new 'port shrouded' turbo inlets to avoid 'compressor surge'....

 

[Darkcyde]

I take it to mean the new 'port shrouded' turbo inlets to avoid 'compressor surge'....

winner

 

[we4Mateo]

So since we're all on the same page now, any answers to the question re: personal experience from old turbo to new style with the anti-compressor surge design?