Thread: Rxpx rpm
01-30-2011, 12:20 PM #1
Hi all took my bros rxpx 2008 out for the 1st time today and it's only hitting 8330rpm here's the mods
Remapped 8650 ecu
50 pound injectors
4 inch k&n filter
light weight seat
should he be getting around 8500 rpm ???.
Look forward to your replys. Thanks
01-30-2011, 12:35 PM #2
I'm guessing he needs to pitch his prop correctly
01-30-2011, 01:13 PM #3
Stock is around a 15/20. I would pitch the trailing edge a little or get you a 15/22R. Personally you will gain performance with the true 15/22R instead of pitching your OEM prop. Speed gains will result seeing as there is around 300 rpm's left on the table. You have come this far. Get you a 15/22 and be done with it. It is up to you. You can bend the 15/22 slightly to your specs if need be.
01-30-2011, 01:17 PM #4
You will see a little more top end if you get it revving harder but it might be slower in chop as you will be closer to the limiter, just depends what you want really, also the harder you rev em the more maint they need.
Hope that helps.
01-30-2011, 01:33 PM #5
I know you said remaped ecu, but 50's sounds like a lot of fuel for a stock sc.
01-30-2011, 01:43 PM #6
They are lean on the stock ECU, Les's ECUs tend to be lean as well so 50s will be safe, this guy is in the UK as well so it's cold and dense air over her right now.
The stock prop works really really well to be fair just needs a couple little tweaks to get it good.
What injectors was the re map done for??? If it was done for the stock 42s then the 50s will make it a touch softer on the bottom but safe up top.
IMO it's perfect for CC as is so if your just using around the course I'd leave it alone
01-30-2011, 01:45 PM #7
What is your A/R ?
What is your charger?
How many hour in the engine?
01-30-2011, 02:23 PM #8
01-30-2011, 02:41 PM #9
01-30-2011, 02:50 PM #10
R88 I think you know this ski it's James Bushells old one he had in Dubai. Thanks
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