07 rxp build question on injector size

[PirateWatercraft]

iVE GOT A 07 RXP WITH RIVA COLD AIR INTAKE, FREE FLOW EXHAUST, OPAS BLOCK OFF, WORX SPONOSONS, 2 DEGREE PUMP WEDGE, 42 # INJECTORS AND ET 127 SUPERCHARGER IMPELLER AND 14/19 SOLAS IMPELLER. IM UPGRADING TO AN X TYPE CHARGER AND FIZZLE INTERCOOLER AND 15/20 IMPELLER. AM I GOING TO NEED TO UP THE # ON THE INJECTORS?

[skidoochris]

How are you going to control the fuel?

[greenbullet]

No ! 42 lb injectors and stock ecu will run that 127 with safe afr at stock revs. Been done for years and years before the vtech gods and data loggers were born

[skidoochris]

you will probably be fine using the stock wimpy timing and the low rev limit
and it will put your injectors at 100% DS

[greenbullet]

you will probably be fine using the stock wimpy timing and the low rev limit
and it will put your injectors at 100% DS

It's been done for years without dropping 10 k on electronics. They run 100 dc out of the box and still run so for the simple setup of this charger and the average rider rec user it's the best bang for the buck

[Snoman]

IF hes upgrading to an X charger he is gonna need to add a RRFPR though...

[PirateWatercraft]

where can I find info explaining rrfpr and how it works?

[PirateWatercraft]

the X charger works with no RRFPR on stock 260 skis, this ski still has factory ECU and factory rev limiter. so why would putting x charger require RRFPR?

[RXPJAY]

First, why go from the et 127 to the x? Unless he plans to drop a larger wheel in, is is really beneficial?

with greenbullet, been running this wheel for three years with every possible mods to enhance this little wheel. Zero fuel control. And yes, I monitor. I guess pending where you are will play into this.

[Snoman]

the X charger works with no RRFPR on stock 260 skis, this ski still has factory ECU and factory rev limiter. so why would putting x charger require RRFPR?

Because the newer skis ECU is mapped and timed for that Scer setup..Your ECU is mapped for a smaller wheel and 38lbs injecters.. your gonna need 42lbs injecters to feed that charger and so at the higher RPMs its gonna need a tad bit more fueling thats why you need the RRFPR..Trust me ,this setup has been out and ran for years on the post 08 skis....