[200q20v] What difference should the 5000's turbo make?

[Vztante at aol.com]

Thanks for the warning Ingo.

The car comes with a yet to be installed RS2/IA Extrude-Honed exhaust 
manifold. Peak boost is 19 psi.  Do you think under that pressure that the 
RS2 manifold is a necessity? It has been driven for several years without it. 
This is a car that I am considering buying.

Mitch Frey
'91 Miata "Torqueless Tailwagger"
'00 A6 2.7t