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Stock tranny vs. programmer

809 Views 3 Replies 4 Participants Last post by  Rizzo, 
Big Bad 03
What would happen to the stock tranny if i ran a programmer on a high setting? What would be the first thing to go wrong vb, tq, ect.?
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Rizzo
I have a Smarty Jr. I thought it would be safe for a stock auto tranny. NOPE!! I drove very responsibly and my tranny started slipping after only 4k with the programmer installed. I only used the towing and economy mode to boot. I'm not sure if I'd run a programmer at all with the stock tranny. Of course, there are guys on this board who have high mileage with stock tranny with a programmer. Maybe it's luck of the draw.
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