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Too much Boost pressure

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Old Apr 27, 2011 | 12:47 PM
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Too much Boost pressure

How much is too much PSI Boost while towing, Stock 06 6.0L/w 4in exhaust. Towing around 12K with 5th whl. 3 slide. Was seeing around 30 to 35psi while towing uphill or flat land.
 
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Old Apr 27, 2011 | 12:53 PM
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Anything over 28-29 is too much.
 
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Old Apr 27, 2011 | 03:31 PM
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Originally Posted by Stu206
How much is too much PSI Boost while towing, Stock 06 6.0L/w 4in exhaust. Towing around 12K with 5th whl. 3 slide. Was seeing around 30 to 35psi while towing uphill or flat land.
Too high for stock '06 tuning. Who's tunes are you running?
 
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Old Apr 27, 2011 | 05:00 PM
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If you keep on seeing 30-35 psi and you'll be looking at headgasket repair job.
 
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Old Apr 27, 2011 | 05:04 PM
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If you find your issue, please post it as I have the same issue while towing. I plan to check the VGT this weekend. I am hoping not to pull the turbo!
 
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Old Apr 27, 2011 | 06:15 PM
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Stock tunes, was running around 1000 degrees on exhaust temps most of the time, was pulling 5ver from Yuma AZ to Las Vegas then on to home up the back roads from nevada to Seattle area. Did notice while pulling some grades or hills boost psi was getting up there around 30 to 35 a couple of times it was higher, even tried to downshift to another gear to get psi down. After I got home I noticed my oil is super dirty, and coolant is down about 3/4 in from the line of min. on the bottle, is scheduled for an oil change in another 500 miles.
 
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