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Old 05-14-2014, 10:36 AM   #1
Scooby Newbie
Member#: 390337
Join Date: May 2014
Chapter/Region: South East
Location: Durham NC
2015 WRX

Default 2015 WRX Turbo Question

I recently bought a 2015 WRX and noticed the turbo was very surgey at lower rpms. After research.. the term "Twin Scroll" came up. Interesting.
Plenty of literature on twin scrolls.. but the article that resonated with me was: http://www.modified.com/tech/modp-09...system-design/

Which reminded me about the old 911 turbo that was amazing.. similar idea to reduce turbo lag. The variable geometry turbo.

Does anyone have any insight why Subie goes with twin scroll over variable geometry? Cost? I'm curious.
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AtomicBazooka is offline   Reply With Quote
Old 08-29-2014, 02:49 AM   #2
Scooby Newbie
Member#: 233124
Join Date: Dec 2009
Location: El Paso TX
2006 WRX TR


Going to guess that with a 2.0 there would be more lag with variable.

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sub06tr is offline   Reply With Quote
Old 08-31-2014, 07:50 PM   #3
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Join Date: Aug 2011
Chapter/Region: South East
Location: Tampa, FL
2015 WRX/STi


That's why I bought the '15 STi.

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