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  1. #1

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    ported efi`s and sound supression?

    is it possible to run lowells ported 1300efi with the sound supression or do you have to run free flow once its ported?i know there are several guys on here that have lowells and tj`s porting and running 78 -79`s !!!!are you guys running freeflow or stock sound supression?


  2. #2
    ABBOTT's Avatar
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    Absolutly - you can run it either way. Lots of others have found that the stock sound suppression is better to use unless you have the jetworks mod.

    but yea, you can leave your stuff stock behind the battery wall.

  3. #3

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    how about jetworks mod in with stock sound supression.i know with group-ks bb kit th free flow is a must,it would be nice to have the jetworks mod but yet still have the sound supression in.

  4. #4
    All depends on what you are doing compression wise. The only reason to remove the stock sound supression was to reduce the chance of detonation (thank you Mr. Harry Klemm @ GroupK) if you are going with a high compression head. Otherwise keep it. Removing it has been known to cost a few rpms.

  5. #5
    Knr's Avatar
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    im running kerrys porting and the stock sound suppression with the fernando's jetworks

  6. #6
    Moderator RX951's Avatar
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    ttt

  7. #7
    Mik72e's Avatar
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    I ve been thinking the same thing for a while now can you run sound suppression with Lowell s porting or TJs( i was told with porting run the free flow).

    I am running Lowell s porting with free flow with 150psi comp so what you guys are saying sounds suppression should be fine with 150psi comp.

    Abbott i seen in you wifes ski when your where selling them you had no free flow and this started me thinking again.

    Would be great to get feed back from some of the big tuners from here.

  8. #8
    Hydrotherapy's Avatar
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    Quote Originally Posted by Mik72e View Post
    I ve been thinking the same thing for a while now can you run sound suppression with Lowell s porting or TJs( i was told with porting run the free flow).

    I am running Lowell s porting with free flow with 150psi comp so what you guys are saying sounds suppression should be fine with 150psi comp.

    Abbott i seen in you wifes ski when your where selling them you had no free flow and this started me thinking again.

    Would be great to get feed back from some of the big tuners from here.
    i have it on good authority that with lowells porting the ff is required to be on the safe side,not saying it cant be used just it safer to fit the free flow.

    i too would of liked to keep the ss as i cant stand the mid drone of my riva (blue) free flow but if it keep me on the safe side i will fit it as soon as my stuff returns from lowell..

    also looking into some sound deadening for the water box as i saw abbott sprayed his with some too keep the noise down a bit more.

    although i am not a tuner my advice came from one this week
    Last edited by Hydrotherapy; 11-02-2007 at 07:43 AM.

  9. #9
    Chrisrokc's Avatar
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    I will be running a FF on my 1390 setup. To me it is worth the few rpm loss to be safe.

  10. #10
    Mik72e's Avatar
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    Paul i had the same advice as you that s why i responded to this post would be nice to run the SS.

    Lets see what everyone is running with ported 1300s
    Free flow/Sound Suppression

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