ultimate race downpipe

bill silvis

Well-Known Member
81
12
Latrobe Pa
Vehicle Model
Civic si
Body Style
coupe
hey guys, do any of you know if the ur downpipe for a sedan will fit a coupe? i cant seem to find any concrete answers, i checked skunk2s website and it has the part number the same for sedan and coupe but ur website doesnt say anything there is a guy close to me selling one for cheap but hes got a sedan and i wasnt 100 percent sure if it would fit, if it has a defouler i can run without a tune until i can get one correct?
 

7civics

Well-Known Member
164
165
Surrey
Vehicle Model
Si
Body Style
Sedan
It will fit, the DP's are the same for the sedan/coupe - its the catback that differs.
 

bill silvis

Well-Known Member
81
12
Latrobe Pa
Vehicle Model
Civic si
Body Style
coupe
Cool thanks man. Do you know what the power difference is I read it's minimal between catted and catless something like 5-6 hp
 

323

Modifier
5,252
3,682
Chicago
Vehicle Model
Civic Si
Body Style
Sedan
Cool thanks man. Do you know what the power difference is I read it's minimal between catted and catless something like 5-6 hp
it's less than that usually, 2-3 hp from what i've read. 4 at the most but even at 5 or 6, it's not worth the smell and emissions in my opinion.
 

7civics

Well-Known Member
164
165
Surrey
Vehicle Model
Si
Body Style
Sedan
Cool thanks man. Do you know what the power difference is I read it's minimal between catted and catless something like 5-6 hp

It could be as little as stated or much higher depending on your application.I m supercharged and had to trade out my catted dp for a catless as I was leaving a lot of power on the table due to hitting a wall in tuning after adding new parts. In my case we are talking around 20-30whp. It also depends on the cell count of the cat used, higher count are more restrictive - I believe most HFC's are 200-300 cell count.
 

bill silvis

Well-Known Member
81
12
Latrobe Pa
Vehicle Model
Civic si
Body Style
coupe
@323 Emissions is right now my biggest concern, after flashpro i know it wouldnt throw a code but i dont think the hassle with having to put the stock one back on to pass a visual is worth it, and for forced induction i agree. id really like to make an all motor build. i would love to get my hands on some cams if they ever are released unless im missing them on someones site. i saw bisimoto made something but im not entirely sure if they are a production part.
 
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