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Power Strokes
6.4 Aftermarket
the build before the build
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[QUOTE="madman1234509, post: 1176104, member: 3910"] That's pretty close to what I saw 2-3 years ago on stock turbos with the older Spartan tuning. This is why it's good to have an actually bp gauge if you have any money invested in your truck because we really have no idea if you're making 72lbs of back pressure or 92lbs of back pressure. Regardless, you haven't even hit a 2:1 ratio. Its not ideal to be that high but Its not completely off the charts. I make about 20lbs more bp than boost right now. Before a bunch of testing with the gates I'd see 60-65lbs and peg a 100lb back pressure gauge.... Talk about scary [/QUOTE]
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