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  1. #1
    gprxpduglas's Avatar
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    ET 140 supercharger in a speedster 2006 215hp

    I m putting the whole set up and tune for a 140 ET charger in the boat with stock ecu. Anyone that could give me any comments on this..... as far as I know with stock ecu I have better reliable boat. Any suggestions would appreciate it,


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    gprxpduglas's Avatar
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    15/20 pitched impeller @ 8100 rpm. I think I can get to 66 to 68 mph. .,

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    JT jpt7779's Avatar
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    Seriously? The ET68-140 SC is a beast and awesome SC and has performed well for me in my 2010 RXT-X. It cranks out 16.5 psi at 8800rpm.

    With a stock ECU turning only 8100 rpm you are leaving soooooo much untapped, paying a LOT of money for something and only using 1/2 of its capability. Additionally, the big ole 68-140 generates a lot of heat and you need a superb external intercooler to process it. What are you using?

    Save yourself a lot of money and get the ET 127 or 137 with a stock ECU……….much more practical IMO.

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    gprxpduglas's Avatar
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    I have the 127 wheel now with 42lb injector, fuel pressure regulator, fuel line, fuel tank adaptor, Begi, fizzle IC , boost gauge and I got just now the innovate afr gauge. So with the 127 runs great so the set up is there to just go for the 140 wheel supercharger and put the 50 lb injectors which I have 15/20 pitched impeller. That's how the set up is stock ecu

  5. #5
    gprxpduglas's Avatar
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    Quote Originally Posted by jpt7779 View Post
    Seriously? The ET68-140 SC is a beast and awesome SC and has performed well for me in my 2010 RXT-X. It cranks out 16.5 psi at 8800rpm.

    With a stock ECU turning only 8100 rpm you are leaving soooooo much untapped, paying a LOT of money for something and only using 1/2 of its capability. Additionally, the big ole 68-140 generates a lot of heat and you need a superb external intercooler to process it. What are you using?

    Save yourself a lot of money and get the ET 127 or 137 with a stock ECU……….much more practical IMO.
    I m getting 61mph with the 127.... so hopefully I get to high 60 with 140 ET charger at 8100 rpm,

  6. #6
    AtoMIC_OraNGE greenbullet's Avatar
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    Quote Originally Posted by jpt7779 View Post
    Seriously? The ET68-140 SC is a beast and awesome SC and has performed well for me in my 2010 RXT-X. It cranks out 16.5 psi at 8800rpm.

    With a stock ECU turning only 8100 rpm you are leaving soooooo much untapped, paying a LOT of money for something and only using 1/2 of its capability. Additionally, the big ole 68-140 generates a lot of heat and you need a superb external intercooler to process it. What are you using?

    Save yourself a lot of money and get the ET 127 or 137 with a stock ECU……….much more practical IMO.

    ive heard this before douglas lol

  7. #7
    JT jpt7779's Avatar
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    Good luck and I hope you obtain your goals!

  8. #8
    gprxpduglas's Avatar
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    Thanks me too lol,
    Douglas

  9. #9
    gprxpduglas's Avatar
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    Quote Originally Posted by jpt7779 View Post
    Good luck and I hope you obtain your goals!
    Well, I would like to get 68mph plus which I think just changing the impeller to 15/20 pitched will gain 2 mph and adding the 140 wheel supercharger et can get me 5 to 6 mph. So that's like 8 mph gain over the 127 wheel,

  10. #10
    gprxpduglas's Avatar
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    By next week Sunday, the boat will be finish with the 140.... will let you know what top speed I will get,

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