First post to this forum. This is my second 7.3 psd and the first ever diesel I’ve purchased that has a tuner. Purchased from my childhood buddies dad. It’s an ‘02 7.3. He had a mbrp 4 inch exhaust. K&N intake, and a bully dog gt3. Yes I said a bully dog. Took off the K&N immediately and threw on a Riff Raff 6637. Usually I would steer clear from that name. But I tried it few times in performance and tow/economy mode. Gave it a little bit of power. Trans shifted fine. I don’t beat the sh*t out of my truck but I don’t baby it. He was the first owner of the truck now it has 180k. He’s had the bully dog installed for a long time. Am I doing any damage to internals using this tuner? I usually keep it off. But was noticing better performance and mileage with it on.
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