I have been having problems with my car only holding 14psi and I thought it was my wastegate not closing properly, but after looking at the car today I feel like a right fool, my cars dump valve diaphragm has a big burst in it,
so I'm hoping when I take the car out again it will be going alot better,?
My question is should I get a new diaphragm or should I just run a blank? I know it's meant to be bad for your turbo not using a dump valve but how bad is it?

My question is should I get a new diaphragm or should I just run a blank? I know it's meant to be bad for your turbo not using a dump valve but how bad is it?
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