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Thread: Throttle Body Upgrade

  1. #1
    Senior Member trevc's Avatar
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    Throttle Body Upgrade

    This past weekend I upgraded the throttle body on my 2012 Abarth with one that is available from www.modernperformance.com.
    https://www.modernperformance.com/pr..._Body_Dart/603
    This is a case where us Abarth owners benefit from the Dodge Dart using the same engine.

    What Modern Performance does is purchase a stock throttle body from Mopar, enlarge the bore and butterfly and install better butterfly mounting screws.
    There is no core charge so you get to keep the one you remove from your car.

    The standard throttle body (according to my measurements) starts out at 46mm diameter, steps in to 44mm around the butterfly then back out to 46mm.
    Attachment 5102Attachment 5103

    The modified version measured 47mm all the way through
    Attachment 5104Attachment 5105

    This adds up to smoother and better airflow which is very important in this Turbo engine.
    Modern Performance measured a 6HP increase in power at the wheels in their dyno testing which makes this good value for money in my opinion.

    The install took me about three hours. The engine bay is tight and I ended up removing the battery, battery tray and ECU to get good access. One mounting screw I had to remove by reaching up from underneath the car. Somebody with smaller hands / more agile than me could probably do it all from the top.
    I reused the existing rubber gasket. New ones are available for less than 5 bucks from Mopar if you feel you want to replace it as well.
    You will need a 7mm socket to loosen the input hose clamp, a 10mm socket to remove two of the mounting screws and a Torx T27 to remove the other two mounting screws.
    You will also need a selection of extension bars etc. as space is tight.

    I tested the car on the road and then at an SCCA Autocross event. My butt-dyno immediately picked up the performance increase!
    I am glad I made this change and would recommend it to Abarth owners, particularly if you have already invested money in one of the CAIs out there.

    I am not affiliated with Modern Performance and I paid full price for the part.

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    Crossfirecat (02-27-2013), Daytona 500 (03-01-2013), EliRider (03-01-2013), FTY (03-02-2013), nickle (02-26-2013)

  3. #2
    shagghie's Avatar
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    Nice work TrevC!!! He said it took him 45 mins on his own Abarth, but I figured it would take closer to 3 hours for someone like myself. Did you notice an increase in intake sound and turbo whistle too? Your car is breathing QUITE nicely now I bet!!! +6hp at the wheels is a really nice increase for such a simple and inexpensive mod!
    Quote Originally Posted by trevc View Post
    This past weekend I upgraded the throttle body on my 2012 Abarth with one that is available from www.modernperformance.com.
    https://www.modernperformance.com/pr..._Body_Dart/603
    This is a case where us Abarth owners benefit from the Dodge Dart using the same engine.

    What Modern Performance does is purchase a stock throttle body from Mopar, enlarge the bore and butterfly and install better butterfly mounting screws.
    There is no core charge so you get to keep the one you remove from your car.

    The standard throttle body (according to my measurements) starts out at 46mm diameter, steps in to 44mm around the butterfly then back out to 46mm.
    Attachment 5102Attachment 5103

    The modified version measured 47mm all the way through
    Attachment 5104Attachment 5105

    This adds up to smoother and better airflow which is very important in this Turbo engine.
    Modern Performance measured a 6HP increase in power at the wheels in their dyno testing which makes this good value for money in my opinion.

    The install took me about three hours. The engine bay is tight and I ended up removing the battery, battery tray and ECU to get good access. One mounting screw I had to remove by reaching up from underneath the car. Somebody with smaller hands / more agile than me could probably do it all from the top.
    I reused the existing rubber gasket. New ones are available for less than 5 bucks from Mopar if you feel you want to replace it as well.
    You will need a 7mm socket to loosen the input hose clamp, a 10mm socket to remove two of the mounting screws and a Torx T27 to remove the other two mounting screws.
    You will also need a selection of extension bars etc. as space is tight.

    I tested the car on the road and then at an SCCA Autocross event. My butt-dyno immediately picked up the performance increase!
    I am glad I made this change and would recommend it to Abarth owners, particularly if you have already invested money in one of the CAIs out there.

    I am not affiliated with Modern Performance and I paid full price for the part.
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    sweet.

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    been thinking about this for a while....like the stealth of this mod too!!!

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    Fascinating! Looking forward to your thoughts after a while to see if it's holding up well.

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    trevc (02-26-2013)

  9. #6
    Lifetime Member Lifetime Member Vaejovis carolinanus aka lowconabarth's Avatar
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    I saw that last week while shopping for coilovers but to chicken to pull the trigger. Good to know it works well and thanks trevc.

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    Thanks for the info. I'm gonna install one when I install my intake

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    trevc (02-26-2013)

  13. #8
    Senior Member Mr. Man's Avatar
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    Great, now I have to add this to my wish list. Im gonna be so broke
    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!

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    trevc (02-26-2013)

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    Senior Member Ktm250f3's Avatar
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    great find.

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  17. #10
    Senior Member trevc's Avatar
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    Quote Originally Posted by shagghie View Post
    Nice work TrevC!!! He said it took him 45 mins on his own Abarth, but I figured it would take closer to 3 hours for someone like myself. Did you notice an increase in intake sound and turbo whistle too? Your car is breathing QUITE nicely now I bet!!! +6hp at the wheels is a really nice increase for such a simple and inexpensive mod!
    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.

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