same spot on the highway, a long gradual hill, all of the sudden I have no power, until I pull off the highway, clear the P0299 code, restart the truck, and proceed with my drive. I cleared the code, restarted the truck, and continued on my merry way with no further issues. I pulled off the highway and pulled the codes, finding a P0299 "low boost pressure" code. So, I first got this code about 3 weeks ago while towing my boat up a long gradual hill, I was making about 13lbs of boost climbing the hill, then all of the sudden it dropped to 5lbs and felt like I had a 4 cylinder. Also, I'm running the SCT 89 octane tow/performance tune. I monitor a few gauges, such as boost pressure/vacuum with an old android phone with the Torque App on it, connected by bluetooth to an OBDII reader.
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