Air to the Engine

[1BadTundra]

Very cool engine bay. I assume you painted the engine covers ?
Yea, I've reached out to Riva/Jet Boat Pilot, etc. and nobody really seems to offer performance upgrades for Yamaha BOATS. All of the upgrades are for personal watercraft only per responses I received. Since these motors are the same, it makes me think that the weight of these boats may cause issues if you hop them up too much, but that's just a guess.

I feel you man... I cant leave anything "stock". When I saw RIVA offering things, I was hyped. Then let down when it did no good for our boats. I did the intakes, then did a ton of cosmetic upgrades since there was no sense in building the motors, risking reliability. They do offer cones for the outlet side, some people report improvement out of the hole, but others not so much. For the cost, I passed on it.
I did paint the engine covers. Its Yamaha blue for motorcycles.