is 2 1/2 exhaust good or should I run 3" ..................
 

d16z6 with ihi turbo. will the 2 1/2 be fine or would I notice a difference with the 3" pipe?

Re: is 2 1/2 exhaust good or should I run 3" .................. (civicwagonman)
 

3" will allow more flow, but it too could depend are you pushing 6 psi or 20? ya know where i am coming from?

Re: is 2 1/2 exhaust good or should I run 3" .................. (KTeller8)
 

i will be running around 7-10 psi when i get it tuned. I'm thinking it can't hurt to go with the 3", what do you think?

Re: is 2 1/2 exhaust good or should I run 3" .................. (civicwagonman)
 

please get an exhaust cut out, you will not regreat it.

Re: is 2 1/2 exhaust good or should I run 3" .................. (therumblingteg)
 

you don't think 3" thru the muffler is enough? where would you put the cutout?

Re: is 2 1/2 exhaust good or should I run 3" ..................
 

i have yet to see some dyno charts showing the HP gains of a 3" exhaust over a 2.5" for a HOnda...how much power gain can be expected below 14psi?

Re: is 2 1/2 exhaust good or should I run 3" .................. (TheSwift1)
 

the main reason I'm thinking of 3" is because I want to throw something on there pretty quick, which means getting maxi muffler to bend the pipe for me, which wouldn't be madrel bends. all I need on the wagon is two 45's. maybe I should just put the 2 1/2 on. don't think two 45's would slow it down that much would it?

Re: is 2 1/2 exhaust good or should I run 3" .................. (civicwagonman)
 

buy mandrel bends from Jegs or summit, then have them weld them in.

Re: is 2 1/2 exhaust good or should I run 3" .................. (CzanSOHC)
 

2.5 is good put the cut out right in front of the catlatic converter, its way better than a 3 inch pipe. When you open that thing the turbo spools up so much faster and you can feel the turbo kick in so much sooner.

Re: is 2 1/2 exhaust good or should I run 3" .................. (civicwagonman)
 

I would get 3' for damn sure if you're not getting mandrels. That way you'll end up with exhaust that is the same or a little better than mandrel 2.5"

A 3" will give more power than a 2.5" but say you're only running 7 PSI, the difference might be 2 hp or something like that.

Re: is 2 1/2 exhaust good or should I run 3" .................. (Hatchblack)
 

but its not just power gain but spool up time too.

Re: is 2 1/2 exhaust good or should I run 3" .................. (yellowsub)
 

I noticed that my turbo spooled up a lot quicker when I put my 3" exhaust on.

Re: is 2 1/2 exhaust good or should I run 3" .................. (b_edson)
 

here is the 2.5" set up i did for another HT user https://honda-tech.com/zerothread?id...376679#3376679

Re: is 2 1/2 exhaust good or should I run 3" .................. (KTeller8)
 

do'nt necessarily need the turbo to spool quicker, i have a subaru ihi on it. comes in quick, more upper low end which is what I wanted with the awd, but its losing out above 5 or 6 due to me still running stock exhaust on it. I guess i'll notice alot with 2 1/2 or 3".

Re: is 2 1/2 exhaust good or should I run 3" .................. (civicwagonman)
 

i promise you will notice a difference