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· I don't have a truck
19,163 Posts
On my NNBS, I stay at about 180* with a 11" x 8" cooler not bypassed. Without the cooler it hovered around 200*. It's probably not far off, it's not about getting a 100% accurate reading it's about being able to watch and monitor it to make sure the temp doesn't spike. I wouldn't worry about it.
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