Originally Posted by 5PointSlow
There is no long term damage except to the cats. That's why tuners recommend off road mid pipes. Shaun said my high flows would last maybe 40k miles if I ran the tune everyday, but it's just a novelty. The lope tune is the same as the boss track key.
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That's not entirely true. There is definetely some cylinder wash going on with the large amounts of unburned fuel. Any car that runs these tunes you can smell it, it's horrible. I also suspect there will be some long term valve spring damage as well.
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