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  1. #1

    Join Date
    Feb 2008
    Location
    Puerto Rico
    Posts
    43

    Ultra 250 Porting

    has anyone thought of porting a ultra 250 intake manifold and exhaust manifold?...i was thinkin about it and adding a bigger throttle body. With the porting, do you guys think i should get a powershot to add more fuel.. porting adds more air so you would need more fuel creating more horsepower Slap on a wideband airfuel ratio gauge and tune from there? and what about adding a fuel pressure regulator also with bigger injectors??

    interested in your opinions


  2. #2
    Quote Originally Posted by SurpriseRider614 View Post
    has anyone thought of porting a ultra 250 intake manifold and exhaust manifold?...i was thinkin about it and adding a bigger throttle body. With the porting, do you guys think i should get a powershot to add more fuel.. porting adds more air so you would need more fuel creating more horsepower Slap on a wideband airfuel ratio gauge and tune from there? and what about adding a fuel pressure regulator also with bigger injectors??

    interested in your opinions
    I did the porting and polishing. Did not do powershot... noticed increase in quickness and increase in overall efficiency, change in tone of engine (throatyer). Not a lot of top end speed gain. Minor increase in fuel consumption. 7820 to 7860 RPMs

    let us know what you do above and beyond the porting and what performance increases you realize.

  3. #3

    Join Date
    Jan 2007
    Location
    Georgia
    Posts
    20
    +1
    1
    Quote Originally Posted by Socaloffshore View Post
    I did the porting and polishing. Did not do powershot... noticed increase in quickness and increase in overall efficiency, change in tone of engine (throatyer). Not a lot of top end speed gain. Minor increase in fuel consumption. 7820 to 7860 RPMs

    let us know what you do above and beyond the porting and what performance increases you realize.
    Did you do the intake and the exhaust?

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