6.0 Issue
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1st Gear
Joined: Sep 2023
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6.0 Issue
So I have a 06 f250 power stroke, I have an issue when I will go to wot the truck will go to 3600 rpm and won’t up shift. Vgt spikes to 84% and builds around 25 boost psi. I have a newer kc stage 2 turbo on the truck with custom tunes. The truck is studded and has a egr delete. It does this in every custom tune and in stock tune.
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Joined: Jul 2014
Posts: 4,673
Likes: 531
From: Houston, Texas
Will it upshift during normal driving, not WOT? Does it not upshift into any gears? Maybe the transmission is in limp mode (2nd and 5th gears only). That's ofter an transmission wiring harness issue.
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