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  1. #1
    Had a blast. Posi's Avatar
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    Ported Throttle Body Testing

    I finally did a few tests on some throttle bodies on my car last night. Was pretty surprised at one of the tb's and how it did. All testing was started with coolant temps at 180*'s and the blower just barely warm to the touch. Probably about 15 minutes in between each run. We didn't log IAT's and such just because I really didn't think it would show a whole lot. So here's what was tested....

    1. Ported Dragon
    2. Ported Accufab
    3. Ported Stocker

    4. I'm looking for a nonported Stock tb/plenum locally to put it on the car because it's still strapped down on the dyno before my blower comes off and the Project Eaton goes on.



    Boost
    __________Peak______bled down to
    Dragon-------17.5-----------15
    Accufab------16.8--------------14.5
    Port Stock---16.5------------14.5


    Peak Numbers
    _____________HP___________TQ
    Dragon--------524----------------540
    Accufab-------516----------------536
    Port Stock-----514----------------534
    Now here's where it gets interesting....


    HP and TQ at 4700 rpm's

    Dragon------475--------532
    Accufab-----465--------520
    Port Stock--463--------520


    HP at 6200 rpm's

    Dragon---------518
    Accufab--------504
    Port Stock-----503

    The Ported Stocker and the Accufab pretty much had identical graphs in that they both peaked lower than the Dragon and pretty much made the exact same numbers as you can see above. Pretty hard to believe but the car was cooled the same and we made 2 pulls with all of them and they repeated. The Dragon made the best numbers, most boost seen, peaked higher in the rpm's, and carried it out better than the other two. I thought the Accufab would pretty much dyno the exact same as the Dragon. Also that's my personal Accufab and it's ported as much as possible without any welding. Same for the Dragon and the Ported Stocker as in no welding.
    Last edited by Posi; 01-14-2010 at 09:37 PM.
    VMP TVS. 2.8 from VMP and a 6lb Combo by Metco - JLT RAI - SCT Big Air 3000 - Dragon T/B - 80lb inj's - Single Modified FPDM - Twin GT pumps -bap- Afco dual pass H/E - LMM Air Bags in rear - High Boost Overlay - Kooks 1 5/8 Lt's - Kooks o/r x-pipe - Borla Catback - Head cooling mod - SCT X-Cal - 5 Gallon IC Resivoir - Fully Built 8.8 Solid Axle - Weld Wheels - 28" Mickey Thompson Stiff Walls - TF Victory Wheels- Posi ported lower intake - Autometer Phantom Boost & Fuel pressure gages-Built 4R70W by FB Performance-Transbrake...

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  2. #2
    Had a blast. Posi's Avatar
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    Non Ported Stock tb/plenum

    Peak was down 27hp and the torque was down 16ft. lbs compared to the Ported Dragon Peaked at about 5,800 also.

  3. #3
    Had a blast. Posi's Avatar
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    Here's the Graph comparing the Accufab and the Dragon. I would assume you guys are as surprised at the outcome of this as me. I'm kind of baffled that the Accufab was this far behind.






  4. #4
    people know me SUPERSEXY32V's Avatar
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    interesting....cant wait to see the rest!
    99 Rio Red Cobra-Built Eaton swapped Street Car



  5. #5
    Had a blast. Posi's Avatar
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    Alright the last two graphs I have on this.

    First one is just the non ported stock tb/plenum and then the second one is comparing the non ported stocker against the Ported Dragon tb/plenum to show that also.




  6. #6
    Insane SVT Poster
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    Brian when you note port stocker, what all is ported? Did you just polish up and TB and leave the blades alone, or did you pull the blades bore and add larger TB buterflys?

    Also did you use the plenums for each TB, or just one and changed out the TB? Were the plenums ported as well? I assume so, but still wanted to check.

    Any chance you going to test a BF TB and plenum?

    Reason I ask I may ditch the idea of a BF TB and plenum and just go with the stock ported TB and welded/ported plenum I have.

    To be honest I am not suprised how well the ported stocker worked, because another thing that few people consider in testing is velocity. Yes a SBTB will add CFM, but a ported stock TB will add some CFM, but maintain a higher velocity of air entering the engine due to the split TB openings.

    Ask any professional that ports head, bigger is not always better if you not moving that air.

  7. #7
    Had a blast. Posi's Avatar
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    Ported stocker consists of the Throttle Body being massaged for more flow the but the Bore's stay the same size as stock. Plenum is ported also.

    Every throttle body was ran with it's own Plenum. Accufab tb with its plenum and so on.

    Testing is over now because the Ported Eaton Project is going on the car. I guess I could test a Billet Flow but I'd have to find one, port it, and get before numbers off the new blower again. So I doubt I'll be testing one anytime soon.

  8. #8
    to poor to be fast JamesHell's Avatar
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    I could send you mine for testing as the car is down for the winter. It is ported pretty good. And I wouldn't need it back for a bit.

  9. #9
    Had a blast. Posi's Avatar
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    If I can get the car back over there I'll send you a pm and try to test it. Then for you letting me borrow it if I saw anywhere to cut I'd port it some more before it went back out to you for free.

  10. #10
    to poor to be fast JamesHell's Avatar
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    Cool.

    I know when I first got the BF TB I couldn't believe that the plate wasn't the size of the opening like the Dragon is. I had the BBK twin 62mm on a stock elbow before. After I did a little math the BBK had the same surface area as the BF? In other words I the only thing I bought was a better elbow and better throttle response. The BBK was jumpy.
    Though I have to admit I can't believe the accufab was that restrictive?

    LMK,
    James

  11. #11
    Had a blast. Posi's Avatar
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    ^I'm baffled on the Accufab also as I'm sure a lot of other people are too.

    If I can somehow figure out how to set some testing up again for the BF I'll pm you and let you know. After this week though I'm dyno'd out for a while.

  12. #12
    Illiterate Proofreader birdman941's Avatar
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    I am aware that Dragon is now making Terminator TB/ plenums
    and it has the IAC underneath.
    First, got any pics of one? The Dragon site does not really show it with the IAC installed.
    Also, to what do you attribute the extra power over the others?
    Really curious.
    Thanks.
    100% Hand built 2004 Cobra (Body in white)
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  13. #13
    Had a blast. Posi's Avatar
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    Quote Originally Posted by birdman941 View Post
    I am aware that Dragon is now making Terminator TB/ plenums
    and it has the IAC underneath.
    First, got any pics of one? The Dragon site does not really show it with the IAC installed.
    Also, to what do you attribute the extra power over the others?
    Really curious.
    Thanks.

    Actually I don't have a picture with the Dragon on my car.

    Larger tb and my guess would be mostly from the better flowing plenum compared to the others.

  14. #14
    IRS Assassin vtecthis349pony's Avatar
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    did you have idle problems with dragon??? I cant get mine under 1300 rpm....
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  15. #15
    Had a blast. Posi's Avatar
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    Mine hasn't been on the car long enough to settle down. How many miles are on yours? If there aren't many then just drive it and see if it settles down. It could take 200 to 250 miles for it to do so. Also where did you buy it?

  16. #16
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    What is the dragon who sells it? I'm intrested

  17. #17
    Had a blast. Posi's Avatar
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    Quote Originally Posted by g'z rayo View Post
    What is the dragon who sells it? I'm intrested
    Dragon tb/plenum seems to be at the time the best tb/plenum for 03/04 Cobra's. Results are in this thread. Dragon Performance makes them and quite a few suppliers sell them. I sell them for $500 port matched to any inlet of a supercharger. Or $450 non ported plus shipping on both.

    Dragon Performance Parts

  18. #18
    Crazy SVT Poster EVL VNM's Avatar
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    You have me sold on your business. Couldnt believe the accufab performed so low. Also sent you a pm sunday? Let me know if you got it.
    03 SM Vert #3216,


  19. #19
    boost makes daddy happy mmustangsrus's Avatar
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    i know what i`m going to have to by for my car


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  20. #20
    people know me SUPERSEXY32V's Avatar
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    Brian,

    what pulley combo was on the car at time of testing?

  21. #21
    Had a blast. Posi's Avatar
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    2.9/6lb combo at the time.

  22. #22
    IRS Assassin vtecthis349pony's Avatar
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    Quote Originally Posted by posi View Post
    Mine hasn't been on the car long enough to settle down. How many miles are on yours? If there aren't many then just drive it and see if it settles down. It could take 200 to 250 miles for it to do so. Also where did you buy it?
    over 2k miles... pulled it off very unhappy (WITH THE RPM)... said i could return it for new one still have not done it (over a year by now...)

  23. #23
    IRS Assassin vtecthis349pony's Avatar
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    Tell me there is a fix!

  24. #24
    Had a blast. Posi's Avatar
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    Quote Originally Posted by vtecthis349pony View Post
    over 2k miles... pulled it off very unhappy (WITH THE RPM)... said i could return it for new one still have not done it (over a year by now...)
    Quote Originally Posted by vtecthis349pony View Post
    Tell me there is a fix!


    Don't take this the wrong way but it sounds like you just never sent it in to Dragon for a new one when he told you to.

    Other than that try the idle screw and see if it will calm down a little.

  25. #25
    Quote Originally Posted by vtecthis349pony View Post
    over 2k miles... pulled it off very unhappy (WITH THE RPM)... said i could return it for new one still have not done it (over a year by now...)
    Your tuner can settle it down for you also while on the dyno. I Bought mine used here off the board 2 years ago and have had it on 2 cars with no issues at all.
    '91 Black/Black Notch with '03 Terminator swap. Home Ported Eaton, E85 powered, 2.93/6lb lower, POSI Welded/Ported Dragon set up, Tuned by Pete @ Performance Dyno, Spec 3+, MGW, 3:27's, Bassani catted-X, Mac 3", Leathel Division-X Return system, MM 6-point cage....

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