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      02-18-2020, 09:19 AM   #46
0w40X1
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Drives: 2014 BMW X1 s28i M Sport
Join Date: Sep 2013
Location: West Texas

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I was on a 300 mile road trip from 3000 ft altitude and 91 Oct, to 600 ft and 93 Oct.

When I got there, the gas pedal felt dead. I'd have to keep moving it to get it to go.

Then, I put in the 93 Oct gas, and it started working with better response.

Is car hearing some knock pings?
Appreciate 0