Rpm’s decreasing

BruceXP116

Member
2019 seadoo GTX 230. From what I’ve heard and seen, stock, they are supposed to be above 8000 rpm’s and 63-65 mph. Of course with good condition. Every time I ride, error code P0106 pops up, the manifold pressure sensor. Mine has 70 hours, and it gets slower every day, when I first bought it, it was at 7200 rpm and 59 mph, now, about 3 months later, it’s at 6700rpm and 52 mph. This is with a 130 pound rider. We looked into it and found the manifold was split, so we bought a new one and put a girdle on it. We replaced the MAP sensor (p0106) also. Didn’t change anything, if anything it was slower than before, and the code still pops up. The oil is filled half way between the marks and I replaced the spark plugs. The wear ring still looks perfectly fine along with the impeller also perfectly fine. I am stumped on this. Anyone have any clues?
 
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