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I have a btr stage 4 and have had 2 tuners because I was leary of the first numbers. My first numbers were 451 hp and 414 tq after tune. I then went to another tuner with same dyno with very similar conditions. About 70 degrees and little humididy and without any changes made 477 hp and 443 tq. He ended up making no changes in the tune.
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