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Message: [QUOTE="Charles, post: 1315401, member: 103"] I've never tuned on the fly... I have a tweeccer, so I pull over, make whatever change I want to make, switch the truck off, key it on, reflash the tweeccer (about 20 seconds) key the truck, crank and drive away again. In fact, I was messing around with some stuff one time and a guy in a dodge came up behind me (probably seeing smoke as I was testing something) and wanted to show me how stacking boxes was gonna murder my old dinosaur. Unfortunately I was in a program that made like half power, lol. I pulled over, reflashed to my current F your face file, immediately caught back up with him and murdered him. He stabbed it and I immediately stepped out and passed him, lol. Point being, flashing a J3 module takes nowhere near as long as flashing through the OBD port. You can technically live flash the tweeccer, but I think like most, if you make much of a change the truck will knock or hit hard and throw SES lights or just straight die. Wasn't my cup of tea. I always turn it off. With the hydra I'm sure it would work the same way if not better. [/QUOTE]

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