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Yeah I believe I have some heat soak as well. I'm not sure if its just the excitement of getting on the water but it seems the boat has more power the first few minutes on the water. I do a ton of WOT. I currently have a sealed intake tunnel, Wet wolf adjust a thrust, and cobra fins and can hit 45 with 2 people in 90 degree weather at 1100' and high humidity. When I took the boat out for the first time (all stock) with 2 on board, in 70 degree weather, it topped out at 47. I think my next step is going to be a Fizzle intercooler and BOV ($800) and the maptuner ($950).