i know this mite be dumb n stupid but is it possibe to put a blow off valve on a stock l67
unless its turbo'd
no... theres no immediate build up of manifold pressure being supercharged
hope this answered you question
get a air to air intercooler and i guess you could?? there were also people trying to get one to work by drilling the L.I.M but i think that was not successful.
Unlike a turbo when you back of in a positive displacement supercharged car (L67) the boost dies immediately as boost is directly poroportional to revs .
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