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Discussion Starter · #1 ·
i get this 'tinny' or ringing noise at about 5000rpm and up until it shifts. i took my moms 530 out and her engine pulls strong all the way until if shifts no ringing noise or anything. i only put 91 octane gas in it so its not like i put lower octane and am gettin a pinging noise. what could it be?
 
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