Originally Posted by
rsmark86
What you saying is true bud, but us amateurs have seen people run into problems at certain power outputs
With the zetec turbo it seems to be boost levels more than anything else, like stock springs at 11psi max
Hence I fitted ones that are rated too 2.6bar and hope to never have too worry
Agreed, Boost and Rpm are relevant here, although there is waaaaaay more to it for a complete discussion on the spring spec required!