This past weekend I upgraded the throttle body on my 2012 Abarth with one that is available from www.modernperformance.com.
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.
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The modified version measured 47mm all the way through
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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.