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2014 Si Exhaust Differences?

Chuckable

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Does anyone have any information on the 2014 Si exhaust changes? Honda shows a 4hp increase. http://automobiles.honda.com/civic-si-coupe/specifications.aspx Their press release says it's due to a "retuned exhaust." http://automobiles.honda.com/news/press-releases-article.aspx?Category=General&Article=7641-en

Since aftermarket cat back exhausts gain around 5hp or so according to Vit, I was wondering if anyone knows where the gain came from? Is it in the downpipe, or the cat back section?

I checked online Honda parts websites and there is no 2014 Si information up yet so I could not compare part numbers. Anyone have any inside information?
 

Chuckable

Well-Known Member
86
34
Thanks for the update. When someone upgrades their 2014 Si exhaust I'd like to see the 2012-2013 compared side by side to the 2014 in order to check compatibility as well as differences.
 

andre12dbsi

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Gatineau, QC Canada
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'15 Acura TLX SH-AWD Tech
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It's something I'm going to look in to for sure. It just depends on how much more the parts will be for us Canadians.
 

andre12dbsi

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Gatineau, QC Canada
Vehicle Model
'15 Acura TLX SH-AWD Tech
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I was able to find the parts list for the 2014 Si exhaust. I went down the list, compared the '13 and the '14 and from what I can tell, two parts have changed as College Hills Honda mentioned above.

18220-TR7-A02 Pipe B (Part 6 in the diagram)
18307-TR7-A21 Muffler (Part 12 in the diagram)

Who's going to be the first to change them? ;)

ImageUploadedByTapatalkHD1400973819.972932.jpg ImageUploadedByTapatalkHD1400973834.652619.jpg
 

andre12dbsi

Well-Known Member
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1,430
Gatineau, QC Canada
Vehicle Model
'15 Acura TLX SH-AWD Tech
Body Style
Sedan
Those were the differences between the '13 and '14. I didn't compare with the'12 but I'm guessing it's the same as the '13.
 

Chuckable

Well-Known Member
86
34
I should have been more clear - I mean what actually changed in the parts themselves? Larger diameter? Smoother bends? Something else?
 
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