dgk1 Posted October 31, 2018 Share Posted October 31, 2018 I have a 2009 cxu 613. Problem I'm having is getting up to speed on interstate and maintaining it. The last couple gears, the truck just seems flat. Once up to speed if you come up on a hill you feel it stop pulling and boost pressure drops. Sometimes you can ease off the pedal and it picks back up. Any ideas on what to look at? Quote Link to comment Share on other sites More sharing options...
OldRedMack Posted October 31, 2018 Share Posted October 31, 2018 Vanes in the turbo sticking? Quote Link to comment Share on other sites More sharing options...
dgk1 Posted October 31, 2018 Author Share Posted October 31, 2018 I'm not sure. It only does it on interstate. I can run all day off the interstate and it's fine. Quote Link to comment Share on other sites More sharing options...
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