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I have a 2 up 900HO Sea doo spark looking into some performance upgrades wondering if id be better off with prop and exhaust air filter etc mods instead of tuning the ski as I have read that the difference between a tuned spark and the 90 HO model was not as noticeable?
 

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The performance Mods do not seem to be doing as much as people anticipated?
The Wide hull (46") vs 41.5 for old XP,s is One factor and the pump processing water seems to be the other. I Have the 90HO and am Not considering any mods Until the end of the season when more people report on their individual results AND Brp announces the New 2015 Spark in September.
 
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With the Bosch ECU , u won't gain any gains with any mods till u reflash it..

Soon as the stock ECU picks up any extra torque or rpm it will pull back the throttle ..

The 90hp works well but the tune is better with some free mod tweaks ...
 
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