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    Powertune having no affect on rpm when sprayed into lower carb. Is this normal?

    New to the forum and hoping someone might be able to shed some light on my experience with this motor. I have a 1996 force 120 ELPT mounted on a 96 Astro S-18FS. (about 1400lbs) I've had it on the lake twice and I'm getting 39mph at full throttle (trimmed) using an aluminum 13x21p prop with rpm...
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