The yamaha Air intake for SHO/SVHO watercraft has always been highly restrictive. The small double right angle S hose was never ideal for allowing airflow. This was always a problem.
Then, in 2019 yamaha changed their supercharger wheels to more efficient models. They made too much power for stock form. Yamaha then modified their air filters to be half the old surface area, greatly reducing power.
Shown below is the highly restrictive 2019+ stock Yamaha Waverunner svho intake filter vs the 2017 stock filter. Upgrading your intake on 2019+ SVHO will make a huge difference and this is a big reason why! Yamaha eliminated 50% of the breathing area to cripple your engine.
air filter element.
Eliminate all of this an install a MACSBOOST Velocity Stack Air Intake Yamaha Waverunner SHO SVHO and Uni crankcase breather.
To complete your upgrade, dont forget to check our our awesome high performance MACSBOOST blow off valve kit!
MACSBOOST Yamaha SVHO Velocity Stack Intake 
MACSBOOST Blow Off Valve Yamaha SHO SVHO
Hi I have a 2018 gp will this fit and work for this year and model
Yes. This kit fits all years gp1800 supercharged Waverunners.
yes it fits perfectly!
Will it fit a 2016 svho
It will fit fx, gp. Will not fit fz.
purchased the air filter understand it goes to front of the supercharger where does the breather tube reconnect to, if it is removed as with the original air filter and box how do you cap it off down towards engine area
Hi, we recommend the Uni Breather to be installed, as linked on the product page.
https://www.macsboost.com/product/uni-crankcase-breather-12x-15x/