Turbo; JH or PL?

[rocco16 at sbcglobal.net (LEF)]

  Improving the exhaust is a particular area where modification can improve a 
  turbo's performance.
  A turbo is driven by not only heat input but pressure differential across 
  its turbine. Reducing exhaust back pressure improves turbo response and 
  compressor outlet pressure with no additional work done by the engine to 
  drive the turbo.

  An engine doesn't "work" to drive a turbo, you should know that.  At least not in the sense that an engine "works" to drive a supercharger.  A turbo is driven by waste energy.

  the maximum boost 
  the engine can run is limited due to all the heat created by the engine and 
  turbo working against multiple restrictions.

  EVERY engine works against multiple restrictions.  Those restrictions are what prevents every engine from developing unlimited/infinite power.  Every engine produces heat.  

  Just turn up the boost until it fails then declare that this crappy VW short 
  block can only sustain 200 Hp!
  Yep, you can crank up the boost to make more power. But only to a certain 
  level.
  The standard performance improvements for an NA engine apply to an FI engine 
  in that they not only improve performance but also allow the engine to 
  operate at a higher boost level due to reduced internal stresses and 
  internal heat.

  First you rail against higher boost levels, then you claim that the reason for NA modifications is to allow those same higher levels of boost.   Make up yourmind.

  You can get all the boost you can possibly want..and more...with no NA modifications.  You can get so much that the engine is hurt.  That's my whole point.    I believe you can agree with that if you'll let yourself.

  larry
  sandiego16v