Ford Mustang Forum - View Single Post - 2006 Mustang GT with CAI & tune = no chirp 1-2?
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post #29 of (permalink) Old 09-11-2009
dtuna42
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Joined: Jul 2008
Location: Swedesboro
Posts: 283
 
I don't think you said what tires you have - softer tires don;t always make a high pitched chir sound; and are you dropped to the ground? if you're really lowered by springs alone that could alter the traction characteristics; and is it shifting hard and fast but you are just literally not hearing the "chirp" sound? or is it actually shifting slowly? If it does not shift quickly enough, or you're not getting really good torque converter lockup, you still may need a better tune. Everybody talks highly of Tillman tunes, and I can vouch for Evolution Performance tunes, so maybe you should try one of them if there is no other answer
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