08-21-2011, 03:54 PM #1
- Join Date
- May 2011
- Union, Nj
Slower MPH with a Riva 2 deg Wedge????
Hey guys. I have a 2011 RXPX I made a gps run and ran 71.8, installed a straight thru hull exhaust, intercoller relocation kit, 2 deg wedge and vts extension rod. After installing everything I dropped down to 68.8 mph, I tried trim at all positions and still 68.8 mph is top speed. Anyone have an issue like this??
08-21-2011, 04:22 PM #2
More fuel in the ski?
Also could be weather change...
08-21-2011, 04:24 PM #3
if you are porpoising that would cause a loss in speed
08-21-2011, 04:54 PM #4
- Join Date
- Jul 2005
- Lake Dunlap, Texas
b-dolla44 more than likely has hit the nail on the head. The only mod you made which makes any horsepower increase is the thru hull exhaust. (and it make more noise than horsepower).
08-21-2011, 07:24 PM #5
08-21-2011, 07:50 PM #6
Do a 4" front air or a rear air, since you have a I/C relocation kit on.
Get a Solas 15/21 or a 15/22, and a RXP stock 83mm exit nozzle. (You need to get the prop repitched after these mods).
Change you intake grate to a R&D.
These mods will put you around 75mph, easy.
08-21-2011, 07:55 PM #7
Jp, with my mods, I have the Solas 15/22r. Do u think I need it re-pitched? I'm knocking on 75 mph @8040-8060 rpm and NO WEDGE
08-21-2011, 08:00 PM #8
08-21-2011, 08:00 PM #9
08-21-2011, 08:01 PM #10
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