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Jet Tech used to offer an ECU mod where you would send your ECU to them, they would install a new chip that could be flashed, and upload a tune specific to your setup......but the dirty diesel emissions scandal that VW caused several years back killed all that.

I wanted to get my ECU flashed, and they said that they no longer offer the service whatsoever.....too many hassles with the EPA nannies looking over their shoulder.

Unfortunately, unless you go the route of a standalone aftermarket ECU and custom tune, we're out of luck on our First-Gen Tundras.....
 
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