Ddp4's run strong, I ran them back in the day and a buddy of mine runs them in his truck, He's running a s467 and will push that charger to over 60psi. Do one thing at a time, pull the plate out first and see how it acts, then if not much of a change pull the afc foot out and see what that does as a temporary test. When it's at 50psi is it Smokey at all?
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