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TVS Mustang Rough cold start

Tys5.OH

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Apr 9, 2018
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NJ
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Ty
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17 Mustang GT PP
Hi Guys,

I recently installed a VMP Gen2r on my 17 GT. During cold starts the car will fire up and then stall after a few seconds. If I give it gas for a bit it will run on its own and when its warm it runs and drives perfectly fine. My tuner thinks it may be a vacuum leak but I sprayed carb cleaner everywhere and don't get any change in idle. Anyone have a similar problem or know what it may be?

Thanks
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Cory S

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Dec 10, 2019
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Bradford, NH
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Cory
Vehicle(s)
2016 Mustang GT Premium
Hi Guys,

I recently installed a VMP Gen2r on my 17 GT. During cold starts the car will fire up and then stall after a few seconds. If I give it gas for a bit it will run on its own and when its warm it runs and drives perfectly fine. My tuner thinks it may be a vacuum leak but I sprayed carb cleaner everywhere and don't get any change in idle. Anyone have a similar problem or know what it may be?

Thanks
My tuner always tried blaming vacuum leaks. It’s COLD here in winter. Leaning out the OL starting mixture finally fixed the cold start stalling.
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