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Discussion Starter #1
I recently installed a tw chip and when ever I get on it real hard in either tow or extreme my check engine light comes on and truck runs a little rough but once I shut it off and start it up the light goes out and the truck starts up and runs fine.is it the truck or a glitch in the chip? Will a regular obd 2 code reader be able to pick up the codes?
 

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that is a overboost code it just shuts fuel down when you hit a certain boost
 

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That is prolly the 1211 ICP high/low code, the OBS trucks don't throw a CEL for overboost.
 

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oh man sorry i didnt look to see what he was driving
 
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