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Discussion Starter · #1 ·
Im shooting for 650+ HP on my RB25, Ill be runnin the GT40R turbo and i was wondering what size wastegate to run. Not sure what factors come into play when deciding on choosing a WG. Any help would be appriciated

Thanks
DJ
 

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What type of boost are you looking to run?

Are you if you are looking to constantly run high boost? If so a 38mm-40mm wastegate is fine, but if you are looking to run constant low boost than you'll need a larger wastegate 45+mm.

John
 
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