Higher Pitched Sound - Mustang Evolution

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Old 08-16-2012, 10:05 AM   #1
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Higher Pitched Sound

Has anyone or does anyone notice the 3.7 changes to a different pitch of sound right at 6k rpms? It seems like a higher pitched sounds..

---------- Post added at 12:05 PM ---------- Previous post was at 12:05 PM ----------

Is this a sign of an issue?
2011 Mustang 3.7 * Grabber Blue * 3.55 FRPP GEARS *20" Dyno in BF G-Force TA KDW * BBK CAI * Roush Axelbacks * BBR 93 Race Tune
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Old 08-16-2012, 10:14 AM   #2
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Re: Higher Pitched Sound

I've only noticed my pitch changing from 3k~ rpms and up. I don't have it over 6k enough yet for me to really say.
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