Quote:
Originally Posted by FA5teryo
ran a 4psi spring and it never had probz. much better bewst controlz.
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Too light of a spring can also cause problems of being unable to reach your target boost. This is more commonly a problem with standard internal wastegate actuators. External wastegates typically have two ports that allow you to hold higher boost even with a light spring (some internal actuators do as well, but very few)
-Matt