DIY R18 P2R TBS with gasket Installation tips!

Discussion in 'Intake & Exhaust DIY' started by RobSBP, Dec 24, 2013.

  1. RobSBP

    RobSBP Well-Known Member

    Messages:
    413
    After installed TBS, I didn't feel that much gain at all. I was hoping to get more responsive from the car. Also, I saw Check Gas Cap warning massage came on the next day.

    After I did some research from 8th gen civic site, I found out that throttle body spacer gasket might be too loose. That was the reason why TBS performed so poorly. I tighten all bolts a little more and the car seem to response much better. But about 10-15 minutes later, the Check Gas Cap warning massage still came back.

    After another research, I found out that throttle body has very narrow passageway for vapor to flow from inside the car. (It's part of EVAP system). If the passageway seal off, we will get error massage from iMid.

    This is the solution from old style P2R TBS.
    [​IMG]

    They made their own passageway by shave off the TBS.

    In the new version, it no longer has gasket ring channel.
    [​IMG]
    To solve the problem, we have to modify the new gasket.
    [​IMG]
    I made 1-2mm. thin passageway.

    After install TBS and modified gasket back, the Check Gas Cap warning massage is now gone permanently. My 0-60 mph timing improve by 0.5 sec faster. This is what TBS can do at optimum performance.

    Update:
    After plastic gasket settle down for few days, tighten throttle body bolts again to maintain optimum performance.

    Throttle Body Spacer works best with Aftermarket intake. There is no performance gain if installed with OEM airbox intake.
     
    Last edited: Jul 7, 2014
    Tak, webby, Pauly99to17 and 2 others like this.
  2. KennyGS

    KennyGS How may I help?

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    Wow, a half second faster is incredible.
     
  3. VNPP

    VNPP Well-Known Member

    Messages:
    987
    Location:
    Rolla, MO
    Vehicle Model:
    Civic LX
    Body Style:
    FG3 Coupe
    Thanks @RobSBP!
    Just the gasket right? No shaving the metal
     
  4. RobSBP

    RobSBP Well-Known Member

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    413
    For the current version, only modify the gasket.
     
  5. webby
    • Staff
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    Very interesting.
    I'm curious as to how you measured your 0-60?
     
  6. RobSBP

    RobSBP Well-Known Member

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    The way I did is record the video first and measure the timing in video editor software.

    Current timing is 8.64 sec.
     
    Ron Flood likes this.
  7. Pauly99to17

    Pauly99to17 Well-Known Member

    Messages:
    9,174
    Location:
    Ville de Quebec
    Vehicle Model:
    2012 LX
    Body Style:
    Dyno Blue Pearl Sedan (FB2)
    I'll be doing this mod. Thanks for info.
     
  8. Pauly99to17

    Pauly99to17 Well-Known Member

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    Location:
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  9. 323

    323 Modifier

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    Location:
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    Vehicle Model:
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    Pauly99to17 likes this.
  10. Pauly99to17

    Pauly99to17 Well-Known Member

    Messages:
    9,174
    Location:
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    Vehicle Model:
    2012 LX
    Body Style:
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    ProCivic has it, but I'm trying to buy this part from WeSellCarParts so I can use my gift certificate. Will let you know if they have it and what the price is.
     
  11. webby
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  12. Pauly99to17

    Pauly99to17 Well-Known Member

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    Location:
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  13. webby
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    I haven't seen them side by side, but it sure looks identical.
     
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  14. RobSBP

    RobSBP Well-Known Member

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    413
    That looks like old style p2r tbs replica. You will have to shave off the metal then.
     
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  15. Pauly99to17

    Pauly99to17 Well-Known Member

    Messages:
    9,174
    Location:
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    Vehicle Model:
    2012 LX
    Body Style:
    Dyno Blue Pearl Sedan (FB2)
    Forget that then. I will just paint the P2R one blue.
     
    323 likes this.
  16. sk8nava

    sk8nava Well-Known Member

    Messages:
    393
    Location:
    Slugger City, KY
    Vehicle Model:
    LX
    Body Style:
    Sedan
    What gasket is that?!
    Mine came with an OEM honda gasket when I bought it, not the one pictured. Mine looks like old style p2r tbs...
     
  17. RobSBP

    RobSBP Well-Known Member

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    413
    Picture? If it like older style you have to shave off metal surface instead.
     
  18. sk8nava

    sk8nava Well-Known Member

    Messages:
    393
    Location:
    Slugger City, KY
    Vehicle Model:
    LX
    Body Style:
    Sedan
    Well its on my car....
    But the pic you posted where it shows the solution for the old P2R TBS, is what mine looks like; it has that space all the way around it for the OEM gasket to fit in
     
  19. RobSBP

    RobSBP Well-Known Member

    Messages:
    413
    In this case, you have to find the way to shave off the metal off your TBS then.

    Note!
    I think the shaded area that on the older p2r tbs picture is wrong. Just follow the shaved off pattern that on the gasket (3rd photo) and you should be fine.
     
  20. VNPP

    VNPP Well-Known Member

    Messages:
    987
    Location:
    Rolla, MO
    Vehicle Model:
    Civic LX
    Body Style:
    FG3 Coupe
    Mine came in the mail today! @RobSBP are there online instructions for the install? I have an idea but not sure exactly how to put it on
     

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