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07-25-2015, 11:43 AM #1
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- Aug 2013
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- east peoria illinois
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07 rxp build question on injector size
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?
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07-25-2015, 11:56 AM #2
How are you going to control the fuel?
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07-25-2015, 02:35 PM #3
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
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07-25-2015, 04:46 PM #4
you will probably be fine using the stock wimpy timing and the low rev limit
and it will put your injectors at 100% DS
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07-25-2015, 05:33 PM #5
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07-26-2015, 07:11 AM #6
IF hes upgrading to an X charger he is gonna need to add a RRFPR though...
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07-31-2015, 01:52 PM #7
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- Aug 2013
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- east peoria illinois
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where can I find info explaining rrfpr and how it works?
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07-31-2015, 02:00 PM #8
- Join Date
- Aug 2013
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- east peoria illinois
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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?
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08-01-2015, 06:11 AM #9
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.
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08-01-2015, 11:53 AM #10
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....
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