normal. you have an open dump. when the wastegate opens engine exhaust is heard with no muffling whatsoever. the sound of open dumps can really vary froim car to car. some are tolerable some are not. some like the sound some dont.
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want a piece of the yellow car? (buy it)
you have to beat the blue car first
and then you have to take on the IV
my favorite quote
"if the solution is simple, God is answering"