Thread: 2010 rxt x mod issues
01-28-2012, 03:19 AM #1
2010 rxt x mod issues
hey guys want to know if this sounds right. if not what can i do to fix it.
I have a 2010 rxt x (US model) and have lost RPM and didnt gain much top speed after doing mods. Mods are 3 inch intake with k&n pod, catch can, riva free flow exhaust, riva speed override module, solas 15/22r prop, stainless wear ring, r&d intake grate, speed freaks bellow band.
speed is 112kp/h (70mp/h) on garmin gps @ 7500 RPM
any feed back will be apreaciated
01-28-2012, 03:41 AM #2
What was the temperature when you were out? If it was really hot, I'm not all that surprised with those rpms. The prop is probably a little tall for your setup. When my rxpx had similar mods on the real hot days I would be around 7700 rpms.
What nozzle are u running?
01-28-2012, 04:11 AM #3
http://www.4-tecperformance.com/inde...oducts_id=1587 for the speed override.
nozzle is stock
some times it would hold 6000 RPM for about 4 or 5 sec then creep to 7500 RPM
01-28-2012, 05:13 AM #4
"The prop is probably a little tall for your setup."
What he said. Try it with the stock prop.
01-28-2012, 05:13 AM #5
What do you mean it would hold 6000rpm then creep to 7500?? Thats certainly not good Or did you mean it would hold 7600 then creep back to 7500?
If that wasnt a typo what you wrote, then you have something wrong there.
01-28-2012, 07:16 AM #6
01-28-2012, 07:27 AM #7
01-28-2012, 07:44 AM #8
01-28-2012, 08:30 AM #9
What are your boost numbers? They should be a bit lower because your turning less rpms.
There are plenty of threads on how to check slip, just use the search function - but if your boost numbers are okay, your slip is probably okay too.
Possibly the octane boost has caused your lower rpms?? I would change the plugs and run it again without the octane boost.
Raising the fuels octane is only any good if you have a tune to match, or else it will actually be derogatory to performance.
01-28-2012, 09:20 AM #10
Check your slip! Mine was about only about 8ft lbs when I bought it, now I run it at 15ft lbs with Mc master spring washers.
You dont want the washers heating up from slipping breaking apart then going thru your engine!!
Also get your prop pitched to run 7960-8000 RPM thats where you will find the best speeds, anything higher and the limiter will hold you back.
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