Question about over torquing spark plugs by at least 11 ft lbs?

Hello everyone, I have a 2012 subaru impreza. I wanted to change the spark plugs so I looked for the torque spec for this car and I got a range of answers starting from 8.9 to 20 ft lbs, I tightened them to 20 ft lbs because I didnt want the spark plug to blow out but now I worry that its too tight. worst case , I... show more Hello everyone, I have a 2012 subaru impreza. I wanted to change the spark plugs so I looked for the torque spec for this car and I got a range of answers starting from 8.9 to 20 ft lbs, I tightened them to 20 ft lbs because I didnt want the spark plug to blow out but now I worry that its too tight. worst case , I over torqued them by 11 ft lbs. Is over torquing by that much big deal?
Update: Thank you to all who answered
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