Will this affect a custom tune downloaded from a programmer?

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Cullen Blazek

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Posted 2 years ago

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Jeff, Alum

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Hi Cullen,

Thanks for reaching out.

While it is hard for us to say because we don't really test this out, many here who use a programmer in conjunction with their Automatic experience no issues. However, it really depends on the programmer and your car. Feel free to give it a try!
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Sam Pratt

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I have a similar question... I own a highly-customized Jeep (e.g. 37" tires, 4.88 axle ratio). I set specs with a ProCal module so that the speedometer et al. don’t go haywire. Wondering if Automatic will be able to keep up with this. 
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We'd have no way of saying for sure, Sam. We can't make any guarantees for how Automatic will function with a car that has been modified. 

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