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Message: <blockquote data-quote="GooseTuned" data-source="post: 1588315" data-attributes="member: 28733">I've been making over 500whp for 45,000 miles so I'd imagine a good tune on a truck that is detuned from the factory would last plenty long. Time will tell. Some customers are over 60-70k on their tuned trucksIn my testing I've seen 100-300rpm spool difference, no peak power gains.  I dont have them on my truck, but I've tuned plenty of people that do.  They don't hurt I suppose, not sure if the rpm gain in spool is worth it.91oct! Good question</blockquote>

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