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Now then chaps. A question for the wise or those who have been before.

I have swapped out my 2017 Abarth exhaust for a custom made stainless system from the cross over pipe backwards. It now consists of 2.25" stainless mid pipe with a small muffler. The rear muffler now consists of a Y split with two small mufflers and outputs through two pipes to staggered 90mm outlets. I have achieved the noise level I wanted, a bit quite but SWMBO's is happy. I would imagine this is very similar to a stock Classica/ Lusso setup now.

My question is, as I have inserted a restictive muffler in the mid pipe would I benefit from an EC Cross over pipe. I imagine the only sure fire way to tell is to get the car dyno'd.

Has anybody done this mod or can profer some solid advice.

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They look like straight through mufflers, how are they restrictive?
 
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2018 124 Abarth
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What you have are 3 straight through resonators that are in cans that look like small mufflers. Taking them off will not make any meaningful gain in power or performance if it could be measured; maybe 1 or 2 hp at peak. The EC crosspipe, on the other hand, WILL make a very noticeable increase in mid range performance. The stock crosspipe is quite restrictive. The EC piece is a smooth work of art with no restriction at all. The turbo will spool up faster giving the performance boost. I have one of the first ones made on my car. Love it.
 

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Now then chaps. A question for the wise or those who have been before.

I have swapped out my 2017 Abarth exhaust for a custom made stainless system from the cross over pipe backwards. It now consists of 2.25" stainless mid pipe with a small muffler. The rear muffler now consists of a Y split with two small mufflers and outputs through two pipes to staggered 90mm outlets. I have achieved the noise level I wanted, a bit quite but SWMBO's is happy. I would imagine this is very similar to a stock Classica/ Lusso setup now.

My question is, as I have inserted a restictive muffler in the mid pipe would I benefit from an EC Cross over pipe. I imagine the only sure fire way to tell is to get the car dyno'd.

Has anybody done this mod or can profer some solid advice.

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Nice system Derek, I would agree with others that a larger diameter crosspipe will improve performance, I fit a new crosspipe when I added my system one.
 

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2020 Fiat 124 Abarth, manual, Chiaro Silver, visability, navigation, convenience packages, brembos
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166 Posts
Another member very happy with the larger EC crosspipe.....butt dyno says increased performance and I can hear more "growl" and the occasional "pop".....just right...
 

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2018 Lusso automatic, Abarth exhaust, GoPedal Bluetooth, red door bushings
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Does anyone know why the stock exhaust pipe has a smaller diameter? It seems odd that such a simple performance would not be there as default.
 

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2018 124 Spider Abarth Custom
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Does anyone know why the stock exhaust pipe has a smaller diameter? It seems odd that such a simple performance would not be there as default.
Crush bending at the 2 curves instead of being mandrel bent. It chokes down to 1.6" and it is 2.25" at the flanges.
 

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2018 Lusso automatic, Abarth exhaust, GoPedal Bluetooth, red door bushings
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Crush bending at the 2 curves instead of being mandrel bent. It chokes down to 1.6" and it is 2.25" at the flanges.
Sorry. What I meant to ask is why did Fiat build the car with the narrower exhaust pipe?
 

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2018 Abarth 124 Spider, Mare Blue / Nero Abarth Leather, Brembo's, Record Monza, Automatic
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Because crush bending is quick, easy, and cheap? Mandrel bending isn't . . .
 
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