Rotax Racing question about old RRECU & New SCer Impelle

[Water4fire]

Will the OLD flash RRECU work with the New RR SCer impeller and stock injectors?

I ask because I am about to buy a old Flash RRECU, but for the use of the New SCer impeller.


Thank you!!!!


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[Water4fire]

Anyone know!!!!

[jawz]

WAG Probably... depending on Ic, prop,etc. The old version didn't have as much timing and more fuel than the new version. Ya know you need to check it with an A/F guage.

[Sundance]

Austin--Should work---the stock class ecu works great with the RR SC impeller. In our heat you will have enough fuel.

[Water4fire]

RAY, Did you get the new RR Impeller? You turkey!!!

I just want my ski to run a solid 75mph in the heat with a full tank of gas
and my big but.


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[Green Hulk]

Ray will get his new impeller tomorrow. I just overnighted his supercharger back to him

[Water4fire]

Ray let me know if ya want me to come by and HELP ya test it???
:P :P :P


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[GPR/STX-15F/RXT]

Austin--Should work---the stock class ecu works great with the RR SC impeller. In our heat you will have enough fuel.

So Ray, do this mean that you are going to test the new RR SC impeller with the stock 38's injectors?? do you have a A/F meter in your ski? thanks

Ray

[Water4fire]

NO he has the RR Stock class legal ECU.

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[Sundance]

So many questions--so little time Ok--here the deal--I should have my ski running by tomorrow afternoon (Friday May 19 ) I have the stock class RR ECU (4502 I think is the number.) Will let you guys know how it does. Austin--you can come ride it anytime--you too Ray.

[GPR/STX-15F/RXT]

I should have my ski running by tomorrow afternoon (Friday May 19 ) I have the stock class RR ECU (4502 I think is the number.) Will let you guys know how it does.

Ray, did you finally tested your ski with the new RR SC wheel? well today we tested one on my buddie Israel Padilla stage II RXP here are this ski mods, complete Riva stage II + RR stock class ECU, RR 10 psi SC impeller, RR 42 lbs/hrs injectors, Impros blueprinted and repitched 14/20R solas prop, Riva high flow hood, RR 158 thermo, Riva pro series opas block-off

TODAY NUMBERS with 93 deg air and high humidity weather ..

77 MPH (on radar) @ 8450 peak rpms

The ski pull like a train from the hole with blistering accel, at the same time another guy from the east coast was testing another RR wheel in another 04' stage II RXP with his *** stock 38lbs/hrs injectors*** and told us that he ran his boat very hard for a while without a single issue.

[ramnj]

The ski pull like a train from the hole with blistering accel, at the same time another guy from the east coast was testing another RR wheel in another 04' stage II RXP with his *** stock 38lbs/hrs injectors*** and told us that he ran his boat very hard for a while without a single issue.

What MPH did he get?

[Shibby1485]

damn, these results are insane!! i'm lovin it. I been contemplating going back to Riva stage 1 and stayin there....i have a new motivation now after hearing all these numbers with the RR SC impeller. I need to find my problems and gremlins

[Water4fire]

Steve what to sell your RRECU???

And think I want anothere RXPPPP!!!

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[GPR/STX-15F/RXT]

What MPH did he get?

Hi Rafy, sorry he didn't talk about speed numbers , he called my buddie and was telling him that he was stomped with the difference in performance after the SC impeller mod, also his ski set-up is very different from Israel since he have more mods than him, for example he is also running a nitrous system with a very (tall) tweaked 15/20R prop to keep his ski away from the rev limiter, also he have the RR race cam, (not sure if the head is ported or not,) and a RR (4501) first generation ECU NOT the same stock class (4502) that Israel is running in his ski.