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Old 03-02-2013, 11:29 AM
Tristar Racing Tristar Racing is offline
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Join Date: Aug 2012
Boat: 2011 X1
Location: Chicago
Posts: 228
Is the Rtp-1 Multiport or Throttlebody injected?
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Old 03-02-2013, 11:45 AM
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Rossterman Rossterman is offline
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Join Date: May 2012
Boat: 2001 prostar 205V
Location: Westcoast
Posts: 1,098
Primary difference is the intake- Block, heads, cam, etc are identical between both. Probably a slight advantage with muliport mcx vs. tbi in the rtp on top end but torque and midrange are probably pretty close. I have the rtp predator and it has plenty of power and runs ~ 44mph wih 4 blade SS prop on 205V (original x-star hull). Some say difference is 10~15 hp in reality. Might be more if engine has the aluminum ETX exhaust manifolds as i understand they scavenge the cylinders much better than stock cast iron manifolds to produce a noticable power gain.
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Old 03-02-2013, 05:05 PM
jason95gt jason95gt is offline
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Join Date: Sep 2010
Boat: NA
Location: Midwest
Posts: 447
There is a difference in years due to the exhaust. The 2009 has a little less power due to the exhaust being more restrictive to make the motor much quieter than the 2008s.
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