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2019 GT Auto Rev Match not working after gutting cars

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I recently had 2 2019 GTs built for track use only, but now the auto rev match on downshift does not work in either car.. Both cars had AC and stereos removed, along with a bunch of other stuff. No codes are being thrown. both cars have custom tunes.

Any ideas? BCM maybe? I don't know shiznit about these cars..
 
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I recently had 2 2019 GTs built for track use only, but now the auto rev match on downshift does not work in either car.. Both cars had AC and stereos removed, along with a bunch of other stuff. No codes are being thrown. both cars have custom tunes.

Any ideas? BCM maybe? I don't know shiznit about these cars..
@Jeff F
 
Auto rev match is a setting in the IPC, check it with Forscan. I’ve gutted mine too and it works as long as it’s enabled in the IPC.
IPC? instrument panel cluster? the setting is selected on both cars in the settings under track apps. Are you saying I should double check that it didn't get switched off behind the curtains (forscan)?
 
Yes sorry instrument cluster, IPC is the module name for the Instrument cluster in Forscan. Yes behind the curtain so to speak. If you don’t have Forscan go grab a connector cable and buy a license for $10 the access it gives you for the price is unreal. Quite intuitive interface as well.
 

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