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2011-2014 Mustangs
2011-2014 Mustang Talk
TVS Coyote A6 Shifting Problem...
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<blockquote data-quote="mikengail" data-source="post: 14619624" data-attributes="member: 143239"><p>Trying to close this out. Looks like, after several tune adjustments, the WOT upshift problem may be solved. Weather is not cooperating all that much lately. Latest tune revision was only tested for a single WOT 3-4 upshift run. No problems at all that one time. Will eventually try all upshift scenarios and datalog to validate. My tuner said it was some shift firmness and "drive by wire" stuff, whatever the latter means. </p><p></p><p>Interesting side note is that during the next to last revision, I tried with both stock tires and DR's. With DR's the problem didn't appear, but with the stock 235's, it was still a slight problem. Seemed like the car was still trying to override the driver commands with minor tire slippage and all the nannies off. Even at speeds as high as 80+, I guess the tires were still slipping a little when shifting. I would oftentimes hear and/or feel slippage at 2-3 shift, but not at 3-4 where the problem was the worst. Go figure. </p><p></p><p>Anyway, looking forward to March when the local track opens to see how much difference the 82mm pulley and the DR's make. Low 11's to high 10's perhaps? Thanks for all the feedback from everyone.</p></blockquote><p></p>
[QUOTE="mikengail, post: 14619624, member: 143239"] Trying to close this out. Looks like, after several tune adjustments, the WOT upshift problem may be solved. Weather is not cooperating all that much lately. Latest tune revision was only tested for a single WOT 3-4 upshift run. No problems at all that one time. Will eventually try all upshift scenarios and datalog to validate. My tuner said it was some shift firmness and "drive by wire" stuff, whatever the latter means. Interesting side note is that during the next to last revision, I tried with both stock tires and DR's. With DR's the problem didn't appear, but with the stock 235's, it was still a slight problem. Seemed like the car was still trying to override the driver commands with minor tire slippage and all the nannies off. Even at speeds as high as 80+, I guess the tires were still slipping a little when shifting. I would oftentimes hear and/or feel slippage at 2-3 shift, but not at 3-4 where the problem was the worst. Go figure. Anyway, looking forward to March when the local track opens to see how much difference the 82mm pulley and the DR's make. Low 11's to high 10's perhaps? Thanks for all the feedback from everyone. [/QUOTE]
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TVS Coyote A6 Shifting Problem...
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