Well after putting on the Power filter last night I hit the water today and the results on top end were not what I expected. The acceleration was still strong and if not a little stronger, that was probly the responce was quicker. The ski just jumps out of the water and pulls hard up to 70mph and then it is like hitting a brick wall. The speeds slowy creep up to .6 of a mile, the tope end is not faster than what they were befor I added the Power Filter. The RPMs do the same. 0-8150rpm and just stays there. I thought I woild get at least 71 with a half tank of gas but it did not happen, still a tad over 70. Does that mean i need more pitch on the impeller??? I have the basic stage one kit now without the wedge.

You probally need the SC impeller. I here they mesh well together.

Well, when things really heat up that power filter will start to shine. You will be able to keep RPM's up in the hotter conditions.

You really need to put that 2 degree wedge on. I think you will run in the 72's with that piece.

Yea but now i am still hitting 70. That is what I was getting with just the solas impeller. I will be adding the SC impeller next month.

Jr, when i did the Riva power filter and Vortech SC impeller (both mods at the same time) in my RXT I gain more acceleration and top end speed with a increase of 300 peak rpm's with my oem stock prop, (i went from 7750 to 8050 peak rpm's) but the difference between you and me is that I ride in very hot weather all the time so maybe this fact have a lot do to with this.

Those are GPS number right?

Yep they are GPSed unmbers. I was seeing 8150rpm and it would hit the 70mph mark with no problem. I have just thought what the problem cold be. The filter is soose to add another 100-200 rpms. The only thing I can think of is I am hitting the stock rev limiter. It wa pulling 8150 in 85 degree heat so what more pitch on the impeller??

you need more pitch and your speeds will come up!

just a teeny weeny bit of pitch though

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You really need to put that 2 degree wedge on. I think you will run in the 72's with that piece.

I cant understand why people believe that unless you true your hull and get rid of the back hook. I tried the riva wedge last summer and I lost RPM and top end speed with the trim above the middle or higher with poor handling.

Look at this way: Most people rxp's run the best speed when the trim is two bars above neutral. Any higher your speeds drop. Its the back hook on the hull on the ski that affects the trim. So why would you gain speed with more up trim with the wedge? Why would you need a wedge on a ski when you already can adjust the trim already?
The wedge works great on three seater skis that dont have the adjustable trim. I have gained 1-2 mph on my stxdi and stx12f with the wedge because they were big three seater skis with no trim.

JrRXP, I would talk to impros about your prop. Your running to close to the rev limiter. I think you have two chooses here. With that high RPM you can get the ppg speed venturi. That would drop your rpm and should give you a least a mph more or have your prop pitched higher just a little bit. That should also drop your rpm a little but give you more on top. I had my prop pitched 0.5 more. It drop my rpms from 8100 to 7900 but I gained almost 2 mph on top.
The prop repitch would be way cheaper than the venturi for the same effect but you would have a little down time waiting for your prop. Impros has a fast turing around time.

This message has been edited. Last edited by: nitro rxp,

Ok the impeller is coming off and will be in the mail Monday for the repitch. If now with the weather in the low 80's when I get the impeller back and the RPM drop down to 8000 and I gain lets say another 1-1.5 on top end. If I add the ventura, if they do drop how much will they drop and how much more can I get on top end?????

You need the high 8100 rpm to run the venturi or it wont work. I got the venturi after my repitch prop when my ski was doing 7900 rpm. The venturi drop my rpm to 7550 with 3.5 mph lost on top. So you cant have the best of both worlds unless you have the $ mods on your ski like Green hulk for the extra power. Either pay over $250 for the venturi or repitch your prop around $65 for the exact same results. I think the choice is easy unless you like to waste your money on mods you dont need. Believe me I learned the hard way and it seems like a lot of companys are out there to get your money and the service sucks when you need help. Impros and Shredmaster are the two best pwc companies I ever dealt with. They impress me with their service and products that work.

This message has been edited. Last edited by: nitro rxp,

The next item that I am gettin gnext month is the SC impeller and eather aBOV or astronger SC cluch. By June I should have the Inter cooler and the ECU and I think that will be all voe me this year LOL I say that now LOL you know how the speed bugs bite

quote:

Originally posted by nitro rxp:
Impros and Shredmaster are the two best pwc companies I ever dealt with. They impress me with their service and products that work.

Shredmaster impresses you?? Tell that to all the guys that bought a BOGUS Shred GPR Ride Plate.

Yikes!!

quote:

Tell that to all the guys that bought a BOGUS Shred GPR Ride Plate.

I had an ultra 150 and made a world of difference. I had a few questions about it and Bob at SM did everything to help me out.
I will tell ya! Here is what Bob wrote yesterday on another board.http://p098.ezboard.com/fultra150frm5.showMessageRange?topicID=3894.topic&start=41&stop=43

We dont need Bob to come on this board also about you badmouthing his company!

I didn't stutter...... and I didn't say BOGUS Ultra Shredmaster Plates............I did say BOGUS GPR Plates.

And that is not badmouthing his company.......just badmouthing his GPR Plate that did not work as advertised.....except for him. Now he threatens "legal stance" against people on the Ultra Board and we are suppose to want to do business with this cat?

JR I told jerry to tell you to get in touch with me anytime if u wanted ... I could have told u that you would see minimal to no mph gains with the cold air kit ... I have been gpsing a lot of parts one by one so i have been learning what actually works and what does nothing at all for mph gains ..

Nitro, i used to think that about the wedge too. I wasn't a believer at all. I tried the 2 degree wedge and my speeds increased 1.5 + MPH. If i pull it off i lose 1.5 MPH so it must be doing something?

CRAZEDRXPHILA I think with the Cold air kit I whould be able to pick up something on the top end becaus I had to be hitting the rev limiter. With anything it help with the acceleration but it is so hard to tell because the sols was so much stronger than the stock impeller. I bleve if I can get the rev down to a solid 8100 I should see at least a solid 71mph. that is my goal speed now. The Next item I plan to add is the SC impeller.