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  1. #1

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    fuel,injector, top speed question

    last summer my old injector was the riva 50lbs

    i change the injector for the bosh 50lbs

    in my test run my best top speed was 73 mph

    last summer was 76mph with the riva

    i know the bosh injector shoot more gas

    can i loose some mph if im to rich?

    i dont have air fuel and fuel regulator


  2. #2
    h2jim's Avatar
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    You will absolutely loose speed if you are rich. What is your setup?

  3. #3

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    New injector bosh 50lbs

    X charger
    intercooler riva gen 3
    Air intake
    Catch can
    Solas 15/22. 4 blade
    Hole filled plate
    Riva grate
    Riva ecu race
    Riva thermostate
    Riva reduction nozzle
    Riva block off
    Riva exhaust
    Riva valve train
    Last edited by philon18; 04-13-2012 at 08:07 PM.

  4. #4
    JFizzleJR's Avatar
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    Quote Originally Posted by h2jim View Post
    You will absolutely loose speed if you are rich. What is your setup?


    how did you learn this?



    Quote Originally Posted by philon18 View Post
    New injector bosh 50lbs

    X charger
    Air intake
    Catch can
    Solas 15/22. 4 blade
    Hole filled plate
    Riva grate
    Riva ecu race
    Riva thermostate
    Riva reduction nozzle
    Riva block off
    Riva exhaust
    Riva valve train
    That list looks very familiar. I suggest trying the Bosch 48s.

  5. #5

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    Quote Originally Posted by JFizzleJR View Post


    how did you learn this?





    That list looks very familiar. I suggest trying the Bosch 48s.
    The problem is I don't want to buy 48 injector because my 50 bosh injector are brand new

    You are telling me is If im to rich on fuel my top speed can be affected

  6. #6
    JFizzleJR's Avatar
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    Quote Originally Posted by philon18 View Post
    The problem is I don't want to buy 48 injector because my 50 bosh injector are brand new

    You are telling me is If im to rich on fuel my top speed can be affected
    Yes. You will have to lean it out somehow if you plan on staying with those injectors

  7. #7
    He have the riva stage 3 with the ecu mapped for the riva racing injectors. The only difference is that he switch the riva/delphi for bosch. Can only this make such a huge difference in top speed?

  8. #8

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    My idea for my problem by a set of brand new Riva injector 50lbs for my stage 3 riva

  9. #9
    monaroman76's Avatar
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    Your prop is too tall. How many rpms are you turning? It must be well down.

  10. #10

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    Quote Originally Posted by monaroman76 View Post
    Your prop is too tall. How many rpms are you turning? It must be well down.
    8600rpm

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