997 Turbo / GT2 2006–2012 Turbo discussion on the 997 model Porsche 911 Twin Turbo.
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How Boost Recirculation Valves Install into the Turbos

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Old Jan 17, 2010 | 09:13 AM
  #16  
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does someone have a dinosheet before and after?

greetings
 
Old Jan 17, 2010 | 09:18 AM
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A dyno is a single gear WOT run. I do not believe that these valves should not affect the horsepower or torque curve on a dyno sheet.
 

Last edited by bbywu; Jan 17, 2010 at 09:31 AM.
Old Jan 17, 2010 | 09:21 AM
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mmmh so there is no gain in this?

just wondering as of the benefit of the valve holds the pressure better so there is no gain then? so then I maybe should keep the stock ones or is there something I understand wrong
 
Old Jan 17, 2010 | 09:22 AM
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I didn't say there was no gain. I said that the dyno curve should not change. The benefits of this device would probably be best seen with a a datalog of the boost threshold as you shift between gears.
 

Last edited by bbywu; Jan 17, 2010 at 09:33 AM.
Old Jan 17, 2010 | 09:25 AM
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ah so you only get a benefit on accelerating when you change gears then, did you install them on your car? so far i did not find anything here in germany
 
Old Jan 17, 2010 | 09:31 AM
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I'll let Dan answer these questions, as he can give you the specifics about his version of this modification.
 
Old Jan 17, 2010 | 09:33 AM
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cool thanks as I am starting to upgrade my GT2 so I would be happy to get some feedback about what makes it a better car
 
Old Jan 18, 2010 | 09:05 AM
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If boost tapers off, you would lose that top RPM power. Also if boost is slow to respond, you would have a slower bottom torque curve. Would you see this on a dyno, maybe. Would you notice the improvements driving, absolutely.
 
Old Jul 29, 2012 | 06:27 PM
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good info thanks guys
 
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