03-07-2012, 06:43 PM #1
Can this be right for wht I did on my 2006 RXP top speed
Hello,I just wanted to see why im not seeing the speeds that I should get on my 2006 RXP with 84hrs
I went out to my local lake here in PHX,AZ elevation around 1,789 and the water temp was 54 derees and
air temp was about 77 out and water had some chop..(Here is the stuff (NEW)I just installed on my ski)
1)x-charger 42lb injectors
2)Riva gen II intercooler with blow off
3)rear air intake
4)2 degree wedge with cone
5)Riva race block offs
6)worx intake grate
7)Riva rear exhaust
prop is a solas 15/21 repitched to a 14/20 by impros
9)Everything else on my ski is stock
So when I ran it I only got up to 72.5 with a GPS and rpms @ 8160/8200 gas 4bars
I read so much on what everyone does to there skis and the speeds that they run
I belive I should be in the ball park of 75ish??I belive that prop is part of the problem should be a 15/20 or
15/21..So why am I not hitting the right speeds..Please HELP me..Thanks,Shawn
03-07-2012, 06:45 PM #2
You need a raising rate fuel pressure regulator also with that setup...
03-07-2012, 06:58 PM #3
You may be tapping the limiter. Have the prop tweaked again and see what happens.
03-07-2012, 07:03 PM #4
03-07-2012, 07:05 PM #5
The intake grate is holding you back at least 1mph. Toss on a riva intake grate & you'll see that 74ish mph.. then you'll be on the limiter at 8200+ so repitch to 15/20 and you should see 75ish mph at 8120-8140
03-07-2012, 07:18 PM #6
Its hard work but unless you very lucky you rarely get the speeds talked about on here without a bit of hard work and covering all bases.
If you are game try and sand the edges more square on the plate as well BUTT MODDER BEWARE THE RIDE PLATE GETS THIN so be carefull.
Dont worry about RRFPR use that money for a Vtech tune and some 50lbs injectors>>>>you will love it and you'll be closer to 80+mph!
03-07-2012, 07:23 PM #7
03-07-2012, 07:25 PM #8
If you were to move down to sea level......lol......I have seen a difference of 1 mph from 440 ft above sea level to 0 ft sea level.......
03-07-2012, 07:38 PM #9
I agree with sno, you need to get a rising rate fuel reg. and monitor your afr. You don't want to run lean and burn rings or melt a piston. Blow off valve is not necessary. Oh and where was your trim set at when testing, you want it almost all the way up maybe one or two clicks from the top and try some fresh plugs. Prop should be closer to 15/20. I'm running 78.6 with my mods listed in my sig.
03-07-2012, 07:53 PM #10
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