Tuner experiences?

Chris

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I've heard they are okay, but nothing is going to beat an HPTuner custom tune and some dyno time.

Still, don't expect to gain big numbers on a stock engine. Maybe 10 HP tops, but even then you'll be lucky if that's the case.
 
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BLACKJKU

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Feb 22, 2020
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I put a Hypertech tune on my 3.8, but without doing some other mods to the engine your not going to see any real big HP or TQ numbers like Chris said.