Thread: Seadoo Rxp AFR Fuel Mixers
05-28-2014, 04:36 AM #1
Seadoo Rxp AFR Fuel Mixers
Hey everyone new to this forum, Just want to get a few opinions on my ski and how it is running...
i have a 2006 seadoo rxp, i have just finished rebuilding the engine and have currently done 8hrs since build
Built bottom end
Riva 3" intake
Riva fuel pressure regulator
Supertech vavle springs and retainers
Riva gen 3 intercooler
At first i did have the vacumm on the fuel pressure regulator connected but noticed it was mixing the oil with fuel, only reving to 8100 and the afr gauge was reading 10.5 full throttle
So now i have removed the vacumm on the fuel pressure regulator and have set it to 60psi, took it for a run this afternoon and the mixes are between 10.5 - 11.0 and now its reving to 8360 full throttle
Are these mixes correct or is it still running too rich and shouldnt be dumping any fuel into the oil
Last edited by Deanoo; 05-28-2014 at 05:33 AM.
05-28-2014, 06:42 AM #2
You could pull a little more fuel. What ecu are u running? What are your idle and mid range afr's?
05-28-2014, 06:46 AM #3
you left out the most important part
there are different safe afr's for different max boost and fuel types
05-28-2014, 07:24 AM #4
ideally, you would want to tune for around 11.7 AFR @ WOT
What RPM limit ECU are u running,& what Compression ratio Pistons?
Pump gas, or race fuel?
Are u running open loop cooling, or closed loop cooling?
05-28-2014, 04:14 PM #5
I am running a less cooke tuned ecu rpm limit is 9,000rpm
14psi with 98 octane
Standard compression pistons with open loop cooling system
The AFR's are:
Idle is 12.0 - 12.5
Midrange 13.0 - 14.0
05-28-2014, 04:52 PM #6
- Join Date
- Dec 2006
- Crest Hill, IL
Start by removing that 3" Riva intake setup, you are choking that Bkit...Go to a larger 4" setup, which will feed roughly 77% more air to the SC....that would lean it out a bit
What prop? It sound like it might need some tweaking...
05-28-2014, 05:05 PM #7
I actually did have a 4" intake setup on it, it actually breathers better with the 3" riva setup
im running a 15/20 solad prop. Still need to do the wear ring but i just want to get these afr's corect
05-28-2014, 06:00 PM #8
05-28-2014, 06:02 PM #9
05-28-2014, 06:29 PM #10
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