which is better on a stock craft stright pipe or the riva water box , anyone got any info

Removing the water box will make your craft unbelievably and obnoxiously loud. So, unless you want to alienate yourself and annoy everyone else on the water you should use a water box. Only when the craft is highly modified does it help to remove the water box. And even then it's only minimal.

thanks , i just got the stage 1 kit from you all but i im using the straight pipe , the craft has hiher rpm arond 7880 but sames a lil slower ,

When you say "seems a little slower" are you referring to how it feels? Did you document top speed while it was stock and then again after modifying it using a GPS or radar gun?

Which intake grate are you using?

What "straight pipe" are you referring to? Are you not running a water box at all or are you using a Free Flow Exhaust Kit?

im reffering to how it feels, no water box. yes i did gps the top speed stock it was like 64.4 just below half tank on gas and 65.8 with a lighter rider .im still using the stock intake grateand riding plate cause i wanted to see the gain from the str8 pipe and water box , also do you sell the pre-filters seperate i lost mines

This message has been edited. Last edited by: NITRO,

quote:

yes i did gps the top speed stock

Good! A lot of people make the mistake of not doing that prior to modifying their craft. The ride plate is one of if not the most important component when it comes to improving top speed. Our Performance Ride Plate for the Ultra will net a 2+ mph gain in top speed alone! The reverse gate brackets are built in so you don't have to buy additional parts in order to retain the convenient reverse feature.

The straight pipe won't do anything real noticeable for top speed. Again, it's a mod that's done primarily with highly modified craft (major motor work, turbocharger system, etc.).

Yes, we do sell the Pre-Filters seperately. Click here to order part# RK13090PF-BK.

ok i gps with the str8pipe air intake and sponsor 64.6 in the chop with low fuel .a 240 pound rider, ok if the ride plate gives 2 mph what gives the extra 3 mph on the stage one ,

We achieved our results using all of the parts combined running in ideal conditions with a 175lb rider.

ok cool , my top speed isnt that bad then cause of my weight , 7900 rpm spiking , very loud every one likes the noise sound cool when jumping wakes .will gps some more , hvnt had a good flat day yet in the water to test .
but will update you on when i do

Great! Let us know.

BTW - Are you testing in fresh water or salt water? Salt water will reduce top speed with jet drive craft.

im testing in salt water .cayman islands

ok im very disapointed in the stage one kit ,7990 rpm 65.8 low fuel with 125 pound rider in very calm water is this right my waverunner has been service on 10 hour 25 and 50 and now has 61 hours can someone please tell me the problem . i beleive its the intake slowing the craft down .

any one has any ideas what could be wrong

Have you contacted our tech support rep yet? He can be reached directly at 954-247-0705. You might not consider something to be the cause which may actually have a lot to do with it. He's good at helping people fix problems through a simple discovery process.

thanks i found the problem rear blow off valve leking also supercharger belt was slack , thanks rpm nice 7650 -somtimes 7790

Great to hear you're back up and running!