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2011-2014 Mustangs
Engine/Tuning
Official GT 5.0/Boss 302 UOA thread
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<blockquote data-quote="2013.5.0" data-source="post: 14803140" data-attributes="member: 168033"><p>Unleashed, I got my car back today. The new engine not only feels much better, smoother, not tick-y, but the exhaust note sounds different. It has a different timbre to it.</p><p></p><p>The service writer said no breakin was necessary. From what I recall in the manual it says 300 miles of constantly varying speed, no extended WOT, no laboring the engine, and that's about it. I had an 80 mile drive to get it home. Many people say keep it below 60 for a few hundred miles, obviously I couldn't do this. I have no gone WOT yet but the engine revs much more smoothly and it's just a world of difference.</p><p></p><p>In the paperwork they cited the following problems with my old engine:</p><p>-Compared to like unit - 'sound is not normal' -- important because many people aver the opposite</p><p>-Sound remains with serpentine belt removed (obviously)</p><p>-Sound remains despite cylinder deactivation</p><p>-Scoring on cylinder walls</p><p>-Scoring on cam towers/cams</p><p>-Excessive metal in oil filter</p><p>-Excessive metal in oil pan and oil pickup tube</p><p>-Failed oil pressure testing</p></blockquote><p></p>
[QUOTE="2013.5.0, post: 14803140, member: 168033"] Unleashed, I got my car back today. The new engine not only feels much better, smoother, not tick-y, but the exhaust note sounds different. It has a different timbre to it. The service writer said no breakin was necessary. From what I recall in the manual it says 300 miles of constantly varying speed, no extended WOT, no laboring the engine, and that's about it. I had an 80 mile drive to get it home. Many people say keep it below 60 for a few hundred miles, obviously I couldn't do this. I have no gone WOT yet but the engine revs much more smoothly and it's just a world of difference. In the paperwork they cited the following problems with my old engine: -Compared to like unit - 'sound is not normal' -- important because many people aver the opposite -Sound remains with serpentine belt removed (obviously) -Sound remains despite cylinder deactivation -Scoring on cylinder walls -Scoring on cam towers/cams -Excessive metal in oil filter -Excessive metal in oil pan and oil pickup tube -Failed oil pressure testing [/QUOTE]
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Official GT 5.0/Boss 302 UOA thread
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