Why are the L5 Turbo engine sounds different ?

[Louis-Alain Richard]

Spent the night at the pub with Brady (urQ, 4kq, 200qa20v, 240Z) and Geraint
(200qa10v, 964, GTI Mk2, Spridget), obviously most of the talk was about
cars. One question is still unsolved : why is the sound of the L5 10VT and
20VT so different ? We have some thoughts about it, but I'd like to hear
from others.

 

We agreed that the 10VT is better sounding : rougher, deeper, richer.

 

What is the list wisdom on this ? Which is better, but more important, why
the difference ?

 

Louis-Alain