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Message: [QUOTE="dseitler, post: 1122648, member: 14112"] Most of the time under max conditions it was 57 to 58 psi. On time I recorded up hill a reading of 61 psi. I have a manual gauge and electronic that will record peak numbers and I had the alarm set at 63 psi. Never hit the alarm. I could be totally wrong but I'm not sure if there has been a 67.7/70 on a 6.7 Powerstroke yet. We have plans for me to test that Turbo next after I am done with the 67.7/74. We were going to monitor back pressure and check on possible surging issues but the 6.7 heads flow so well I don't think that will be a problem. Like I said this might be done by now I passed and went for the 67.7 first and then was going back. My final goal is to have this done and then my final Turbo will be the 69/74. I'm convinced that's the right Turbo for me. Sent from my iPhone using Tapatalk [/QUOTE]

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