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Hydra Chip 17-Position Chip
The Power Hungry Performance Hydra Multi-Position Chip is the industry standard for the 7.3L!

Redesigned from the ground up, the Hydra Chip provides Ford owners with a feature packed, high quality, and low cost alternative to other existing modules on the market today.


 
 
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Old Sun, October 15th, 2023, 12:39 AM
forfdnut74 forfdnut74 is offline
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Default Stacked Tuning?

Hello,

Spent the last year building a 7.3 for a friend. Rebuilt Longblock, GTP38R Turbo, Adrenaline HPOP, UDP(Unlimited Diesel Performance) 1.5 Injectors, Hydra Chip, unlocked tunes through Riff Raff. All seemed good at first. Finally get the tunes loaded on the chip, and.....She smokes. At all times. Worse than a lot lizard and a free carton of Lucky Strikes. Even in modified stock, it smokes a little at idle, and any throttle at all causes obscene amounts of smoke. Anything beyond modified stock and it only gets worse. Other than that, it drives and idles fine. But way too much black smoke to drive realistically. Swapped in the stock injectors and it's right as rain. The injectors are new. Well new rebuilt. IPR and ICP look fine.

Finally, the question. Unknown history of truck. Reason for rebuild was a cracked piston. Prior to rebuild the truck appeared stock. No chip has ever been used. But this thing ran really strong for stock. I'm wondering if previous owner had programmed a tune and never returned it to stock. Would that mess with the Hydra? Does the chip start with the existing fuel and timing maps in the PCM and add to them, or does it use it's own entirely? Could a pre-existing tune jack up the baseline for the Hydra tunes?

If so is there any way to tell? Any way to re-flash to stock?

It's a 2001 Automatic.
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