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Thread: Throttle Body Upgrade

  1. #11
    Senior Member Abarth Phreak's Avatar
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    Excellent TREVC!!!

    I was close to ordering it as I have vast experience with MPx...they are great to deal with and would make a great vendor here. I trust what they do as I have purchased literally thousands of dollars worth of stuff for my SRT4 from them. Glad to see you have it and its working well for you. I have purchased the shorty antennae they have...for far cheaper than the competitors...and I like it also...made very well. MPx IMO has never overpriced their products, which is something that I have noticed a few others have done. Nuespeed, as they develop more, will also take the wind out of a few sails soon too. Gotta love competition right?
    Nana Nana Boo Boo Stick Your Head In Doo Doo, My car goes faster than you do!

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    nickle (03-05-2013), trevc (02-27-2013)

  3. #12
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    Same here.

    THis is yet another *must-have* performance part I have on my list already.

    and I've not even gotten the car yet!

  4. #13
    Senior Member Mr. Man's Avatar
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    Stockpiling before taking delivery? I shouldve thought of that
    Owner of "Bianca" the Bianco 2013 Fiat 500 Abarth
    Humming along at 86,XXX miles
    If you people don't want my help, then I'll just take my good looks and country pork rinds back to the bus stop!

  5. #14
    Lifetime Member Lifetime Member MAZ's Avatar
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    Nice trevc!

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  7. #15
    Senior Member abarth&911's Avatar
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    Interesting, as the Multiair system can control the incoming air with the variable intake valve opening it can do, it therefore doesn't need a throttle body. So I was of the impression that there was no throttle body but obviously there is one. Searching the web I found the following.

    " Interestingly, a conventional throttle butterfly is still fitted as a redundant system, in the fully open position, for in the event of engine malfunction or for diagnostics purposes."

    It also make me feel better because the fail state of the multiair is no control and that mean wide open throttle, if that happen the throttle body should takeover and the engine will run like a normal engine.
    Anyone know if the throttle body is used in other situation, like at startup or else?
    1973 911 former track and AX car.
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  8. #16
    Amministratore Fiat500USA's Avatar
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    It is also used in certain situations for a vacuum signal. The valve is open most of the time and if I recall a conversation I had a long time ago, it may be closed or nearly closed for start-up (probably the time where they get the vacuum signal). It was technically not needed, but convenient for them to use for this purpose.
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  10. #17
    Lifetime Member Lifetime Member FTY's Avatar
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    Thanks Trever...I want one now..LOL, looks like a nice hardware upgrade, another restriction on this car.

    2012-FIAT ABARTH
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  12. #18
    Senior Member trevc's Avatar
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    Makes even more sense now why the change is so noticeable - the butterfly is full open most of the time. This mod widens and smooths the air pathway.

  13. #19
    Senior Member trevc's Avatar
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    Quote Originally Posted by trevc View Post
    I was playing with the video camera while doing it. I still need to see if I can edit it down to something useful. I also spent time cleaning up the wiring for my TMC ecu box while I had the battery tray out. It probably should have only taken me between 1 and 1.5 hours.
    i ended up customizing an intake from the ATM and Eurocompulsion parts. A good compromise for me between noise and performance. I will post a picture probably. I am selling my ATM filter element if you want a spare.
    The ATM Holy Cowl was just too noisy for me and the filter just a tad too big for the space I think. I really liked the Eurocompulsion design but I had an early Beta unit.
    I came up with this 'meld'. Got a nice 2.25" to 2" transition pipe from woolfaircraft.com for between the silicon and the filter ($11). Cut the silicon to length and left the hole in the cowl.
    So, I have two cool air paths close to the filter; one through the stock airbox/intake (the filter is removed) and one through the hole in the cowl. For me personally it is a good balance between noise and performance.

    Attachment 5167

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  15. #20
    Member nickle's Avatar
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    Bracing for a newbie lashing on a stupid question....but is there any reason at all that this could damage or compromise the engine. It all sounds nice...any need to be cautious?

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