Clarification on the Bull Sh*% of Performance packages Stage I, II, III

[frankcottnj]

For the sake of ethics I'd like to ask for the opinions of those with the stage I, II, III kits and with supercharged, 185, 215, 255/260 HP skis.
As I ponder going to a 4 cycle and examine the various RXT or GTX skis, I also researched the so called stage kits and I see what appears to be falsities.
How can a 215 Stage I, II, or III kit give the sampe mph as the their equivalent stage packages for the 260HP ski. In other words a Stage II kit is 70+ mph and the 215 and the 260HP; then I may as well just buy the cheaper 215HP ski because with the same stage kit level it performs with same top speed as the 260HP ski.
Something in these so called claims doesn't seem accurate.

Frank, 97, 98 GTX's

 

[red2blue]

For the sake of ethics I'd like to ask for the opinions of those with the stage I, II, III kits and with supercharged, 185, 215, 255/260 HP skis.
As I ponder going to a 4 cycle and examine the various RXT or GTX skis, I also researched the so called stage kits and I see what appears to be falsities.
How can a 215 Stage I, II, or III kit give the sampe mph as the their equivalent stage packages for the 260HP ski. In other words a Stage II kit is 70+ mph and the 215 and the 260HP; then I may as well just buy the cheaper 215HP ski because with the same stage kit level it performs with same top speed as the 260HP ski.
Something in these so called claims doesn't seem accurate.

Frank, 97, 98 GTX's

Well...I'll start off with my own neg feelings toward false claims made by some "kit" designers.

As for top speed claims between a 215 and a 255 for a example with "stage2" upgrades...

That claim may be true...what you are missing...how fast those skis reach their respective new top speed.

Look....maybe you don't wanna believe me...I've said it before in other threads...one more time here...

These machines are in balance...that is...our motors produce max hp at max speed...(give or take a bit.) When you alter one part of the equation you must compensate elsewhere. Sometimes on both sides of the equation....that is...fuel/air:load

The part re speed claims that I have a prob with.....the gross over exaggerating sales claims. A gps is critical for understanding exactly what you are paying for. Having added a few mods to my ski I do understand how little things can affect our performance. Those adhering to the minutia when bolting on performance mods will see expected gains. Those who just wanna throw money at the ski will be disappointed with the less than advertised results.

I've never heard of a single "stage" kit for a 185.

Finally.....most "stage" kits hold value for the older skis. The only real upgrades for the 260+hp skis?...more boost...more fuel...ecu re-flash....prop....and if you really wanna fly.....complete high boost turbo set-ups.....$$$$

 

[frankcottnj]

Ok thank you for your advice. I did expect the accerleration to be better with the high HP skis. I guess I will now be ok with a 215HP ski and not have to go with the 260HP.
Frank

 

[red2blue]

For instance....the difference between a '05 215 and a '08 255...

An xwheel, exic, 42#'rs, taller prop...and an ecu allowing a few more rpm. Coast guard unofficially still mandates <70mph performance....BRP installed one monster grate. + side...great hook up..down side was all the drag keeping that ski top speed down. Easiest mod on that ski....R&D grate and taller prop...instant 74+mph ski.

A 215 can get there as well...same hull...same block....the bolt ons will cost a bit to get you to the x factor...but you'd prolly save on the initial cost to begin with...so still a savings.

 

[brobertov8]

For instance....the difference between a '05 215 and a '08 255...

An xwheel, exic, 42#'rs, taller prop...and an ecu allowing a few more rpm. Coast guard unofficially still mandates <70mph performance....BRP installed one monster grate. + side...great hook up..down side was all the drag keeping that ski top speed down. Easiest mod on that ski....R&D grate and taller prop...instant 74+mph ski.

A 215 can get there as well...same hull...same block....the bolt ons will cost a bit to get you to the x factor...but you'd prolly save on the initial cost to begin with...so still a savings.

Can I ask what are "R&D grate and taller prop" on the 255?

Thanks

 

[JoeZ]

Can I ask what are "R&D grate and taller prop" on the 255?

Thanks

[h=2]R&D 255 RXP-X / RXT-X PRO 2 DEEP RACE GRATE Scoop Grate[/h]
[h=2]Solas Concord Impeller 15/22R[/h]

 

[JoeZ]

In addition to what has been already stated, the quest for a magical number by consumers has for years influenced the marketing of these kits. The most appropriate method would be acceleration charts, not just stating a top speed...but a customer sees company A with a kit that gets them 72 MPH, but company B says 73 MPH. It's all marketing...and yes, most marketing contains a level of BS.

That's why we are doing our videos on the Riva Stage 4 kit for the PX260...we are showing acceleration gains for each modification and top speed is almost an after thought since weather conditions, sea conditions, rider weight conditions all factor in to actual top speed.

 

[brobertov8]

[h=2]R&D 255 RXP-X / RXT-X PRO 2 DEEP RACE GRATE Scoop Grate[/h]
[h=2]Solas Concord Impeller 15/22R[/h]

Thanks.

A friend has an 260rxtx, does this kit works on it or it has to be a different one?
Mas top speed reached: 69 / 70

 

[JoeZ]

Different.
[h=2]Solas Concord Impeller 15/20R[/h]
[h=2]R&D 2009 255 GTX iS/As, 2010 260 RXT-X, 2010 260 RXT iS AQUAVEIN SCOOP GRATE KIT Scoop Grate[/h]

 

[Tytan]

The newer skis are electronically limited to about 68/69 mph. The older skis were limited by either hp, speed scrubbing grate or any other physical impediment.

The older skis are easier to get more speed out of basically make more power with the right supporting mods and it will go faster. The newer skis you can make more power and it will get you to top speed faster but the brains will keep it a 68/69 mph to get past this the brains need to be reflashed with an aftermarked program to remove the limiter.

If you are looking for speed mods you would do better by doing some research and making changes based on what individual components are available and what they do.

I had an 04 RXP that GPS'd around 66mph before I started messing with it. About $800 later and it was GPS'd at 73.6 mph, a lot more bang for the buck than some of these high priced kits. I did my own research and decided what I wanted to do based on performance gain while still maintaining reliability.

 

[Coastiejoe]

My RXT-X with no mods hits 72 mph. I have confirmed this number with a GPS as well as the Seadoo Speedo, (which is also GPS on the newer skis.). I am posting this only so that you can see what newer skis can do.

 

[Tytan]

My RXT-X with no mods hits 72 mph. I have confirmed this number with a GPS as well as the Seadoo Speedo, (which is also GPS on the newer skis.). I am posting this only so that you can see what newer skis can do.

Your 09 RXT-X falls into the older category as it still has a speed sensor at the rear of the hull, there are no electronic speed limiters. The newer models that have iBR have the GPS based speedo which will also act as an electronic speed limiter.

Personally I like the older skis without as much electronic stuff on them. I sold my RXP as the hull was not a pleasant ride for most of the riding I do. My goal is to try and find a nice 08 or 09 RXT-X over the winter and sell my 05 GTX in the spring, I might have to settle for a nice RXT 215 and do a few mods to it.

How do you like your RXT-X ? I keep reading about external intercooler leaks, any issues with yours ?

 

[Coastiejoe]

My 2010 is GPS, my 09 is not. You are correct.

It is the slightly newer intercoolers that had issues. I think the 2011 era. Mine is fantastic. I have the 255 engine. Bought $600 worth of mods 4 seasons ago and didn't put a single one on this far. They are just sitting in the garage.