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How much will I gain?

Discussion in 'SVT Shelby GT500' started by rjm-1, Mar 9, 2014.

  1. rjm-1

    rjm-1 Member Established Member

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    How much will I gain by adding a CJ65mm TB and a JLT 127mm CAI over my current set up of Stock TB and FRPP 113mm CAI? Currently running 2.5 pulley on FRPP TVS port matched to VMP High Flow elbow with Justin's tune. Also running stock exhaust with CATs.
     
  2. NightRide

    NightRide Roll Racer Established Member

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    I say about 20-30 whp.
     
  3. rjm-1

    rjm-1 Member Established Member

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    Wondering if this will create more boost as I'm still running stock exhaust with KR mufflers.
     
  4. 03MUSCLE

    03MUSCLE 03 MUSCLE Established Member

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    I have the same TVS set-up I was wondering the same thing?How much will i gain with a bigger intake and 65mm TB and a revised tune
     
  5. serickson1

    serickson1 sericksonGT500 Established Member

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    If you are running a VMP tune why not call Justin and ask.....he would know more about how much a TVS would gain from those mods than anybody on here.
     
  6. me32

    me32 BEASTLY SHELBY GT500 TVS Moderator

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    The only real gain will be from the 65mm tb and the retune. The upgrade on the cai won't add power and won't hurt power. Just allows you more room on maf range if even needed.You
     
  7. Reis racing

    Reis racing New Member Established Member

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    There is video I'll try to find but JLT did a test comparing the 2 cai and it gained 10hp I think, and then they did a tb and cai and it gained 70hp over stock setup
     
  8. YELL03

    YELL03 Member Established Member

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    How much power are you making now?

    I agree with the 20-30rwhp estimate.

    I currently run a 13 TVS & elbow with a Lund tune, only other mods are Roush axleback, FRPP resonator delete and Airaid non-oiled filter.

    I've toyed with the idea of a CJ 65mm TB, but I can't use the power I have now.

    My car made 590 rwhp SAE (STD #s were about 20rwhp higher) on a conservative dyno. Same day a stock 13 GT500 made 568rwhp SAE.
     
  9. Tucker

    Tucker Active Member Established Member

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    Really:shrug: You must do a ton of testing seeing how you know so much about TBs and how 10mm will not make power...
    I'd love to see your test videos and graphs.

    Here's mine:
    JLT 127 Vs 110mm (3mm smaller than the 113mm he's asking about)
    Car #1 stock 2008
    [​IMG]
    [youtube_browser]-IqugPZ5z8g[/youtube_browser]

    Car #2 stock 2009
    [​IMG]
    [​IMG]

    Car #3 800 RWHP
    [​IMG]
    [youtube_browser]SkGYJjRJUXs[/youtube_browser]

    Car #4 725 RWHP
    [​IMG]
    [youtube_browser]NKWAcpRAiiI[/youtube_browser]

    Car #5 with tire spin 2007 GT500
    [​IMG]

    So, we tested the Big Air on a couple cars, :lol:

    I'm not sure if you just go for post counts or you know what your talking about... Seeing how your wrong on the help you gave about the CAI I'd say...


    OP, I think you'll make some more power from the TB and CAI :beer:
     
  10. rjm-1

    rjm-1 Member Established Member

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    I'm making SAE corrected 633 rwhp and 621 torque. The other concern is I'm running stock catted exhaust and my boost is 16-17 right now. Any more boost and I"m afraid I'll start to damage CATs. Just kinda got the hots for the FRPP 65mm CJ TB! I assume the new TB would increase boost? I'll also email BJ this morning to get his opinion.

     
  11. 1320 Junkie

    1320 Junkie Active Member Established Member

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    Pm Breoland he has a L&M elbow for your type blower...coupled with your planned mods it would be a killer add on.
     
  12. breoland

    breoland Active Member Established Member

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  13. rjm-1

    rjm-1 Member Established Member

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    Already have VMP High Flow Elbow port matched to my TVS.
     
  14. Ninjak

    Ninjak Posting from The Shadow's Established Member

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    Well in truth your bottle neck is at your TB and the Intake. If you upgrade, you will increase the flow that your TVS will receive. No more bottle neck. So I would definitely say you will increase power. How much is decided on a few other factors, but the flow is what you want to achieve.

    So going with a TB of choice and a 123+ intake will get you there. Of course you would need a retune at that point. (123+ CAI+MAF needs a retune)
     
  15. VNMOUS1

    VNMOUS1 Well-Known Member Established Member

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    I'll respond to your email, but for the good of the "house"....

    Yes, you'll see an increase from both the TB and the JLT.

    Yes, you'll make more boost (more flow going in, no changes to increase what's going out, so you'll make more boost).

    You should look at the VMP Twin Jet 67mm throttle body unless you're married to the Ford Racing piece. Ours outflows it and makes more power and uses Genuine Ford electronics and parts. No compatibility issues at all.

    If you really want the Ford piece, I have a test unit sitting here. Call me and I'll make you a deal on it. We really don't use them much anymore.

    bj
     
  16. nxhappy

    nxhappy Well-Known Member Established Member

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    If you get a 65mm+ TB, you will NEED to upgrade to a JLT 123 intake. My MAF was pegging with a 72mm TB and the C&L 113mm intake. Basically the MAF cannot compensate. You will create more boost with the intake/TB upgrade. If you REALLY want to see some gains, you can swap the upper pulley to a 2.4 :)
     
  17. rjm-1

    rjm-1 Member Established Member

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    Thanks for the advice guys! Sounds like I need both..:banana:
     
  18. YELL03

    YELL03 Member Established Member

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    I made 590rwhp/573rwtq SAE on the stock 2.67 pulley with a safe mail order tune.
    The TB for me would just need a tweak of the tune and put me up around 610-615rwhp, the TB and CAI would probably put me at 625rwhp+ and getting closer to needing injectors.

    For now I will stay put.

    BJs advice to you looks good.
     
  19. nxhappy

    nxhappy Well-Known Member Established Member

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    you can always get a BAP for the extra safety net :beer:
     
  20. YELL03

    YELL03 Member Established Member

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    Oh yea, I forgot about that.
     

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