[s-cars] Wastegate Questions

[Michael Exnar]

Hello at all
Owning an '95 Audi S6 Avant turbo I was asking myself of what effect a
stiffer wastegate spring would achieve
by primarily letting the ECU unmodified. There is much spoken about that
a harder spring would yield to a quicker
response of the turbo. I'm afraid that by only changing the wastgate
spring the boost pressure could rise much above
stock pressure (2.15 bar absolute) ending up in a fuel cut-off to
prevent the turbo and engine from any damage. Did anyone
experiment with such a layout or knows its benefits/dangers?
Whatsoever my second thought is that there eventually is not even a
benefit in minimizing the turbolag with the
wastegate-spring-method because the frequency valve would open very late
(at high boost) meaning that
the stock configuration is already optimized in this relation. Absolute
nonsense what I'm writing????
What if I have the car moderately chiptuned to a say 280 bhp. Don't I
need a harder wastegate spring to achieve
the needed extra boost pressure?-> many tuners don't mention this in
their tuning program. Or can the stock spring
handle the extra boost?

thanks,
michael