0.5mm gasket is too thin for turbo use. get stock 4agze gasket, it able to hold around 30psi boost. i using it for all my 4ag turbo, my fren 30psi also use it ba..
i got one unit RM150, first plan to use for swap another ported head for my car but too busy got no time to do it. so want to let go.
it is toyota OEM gze gasket.
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