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Discussion Starter #1
I have a 2016 sti and the Cobb is showing roughness on cyl 1&3, it shows 0/1 every once in a while, what could the issue be?
 

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Check your spark plugs. How many miles on them? Also how do the coils look?


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What Jedi03 meant, or maybe meant, is what octane are you running? 87, 91, 93 ?

And have you always used these stations, especially lately when your issue showed up?

Also, pay less attention to " the Cobb " and more attention to how the car is running. Are you actually having issues, or are you going by what " the Cobb " is telling you?
 
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