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Mustang Forums
2011-2014 Mustangs
Engine/Tuning
Vp ms109
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<blockquote data-quote="corepwn" data-source="post: 14898309" data-attributes="member: 110539"><p>Ms109 is more tolerant and less likely to knock even at a lean mix on a 91 tune than 91. That's why you could run it on the same tune where it was lean but you saw full timing your tuner allows on 91.</p><p></p><p></p><p>People have run boosted ms109 cars at proper airfuel to 23 degrees and more of timing. I bet your 91 tune peaks at 19 or less when running ms109.</p></blockquote><p></p>
[QUOTE="corepwn, post: 14898309, member: 110539"] Ms109 is more tolerant and less likely to knock even at a lean mix on a 91 tune than 91. That's why you could run it on the same tune where it was lean but you saw full timing your tuner allows on 91. People have run boosted ms109 cars at proper airfuel to 23 degrees and more of timing. I bet your 91 tune peaks at 19 or less when running ms109. [/QUOTE]
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2011-2014 Mustangs
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Vp ms109
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