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does anyone know what is the max boost pressure which can give stock turbo ? i heard about 27.5 PSI,
At 7000' altitude I can get a 24PSI boost value with the engine at mid-range RPMs (4k or so). I have not tried at a lower altitude. The boost also tapers off at higher RPM; I see 18PSI at 7000' elevation at the redline.

These numbers are with EC P2 tune installed. I saw about 21PSI max stock.

All values reported by OBD2AA via torque via a bluetooth ELM adapter.
 

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I think what he is saying is why spend big $$$ on big modifications on a 2.0 when you can buy a (discounted) QV and keep it stock and still have more power/warranty/aero/race mode/etc etc.
It will always be less expensive to play with 2.0L and if you want AWD like mine no QV available
 
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