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Old Oct 27, 2005
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question about Exhuast

Well i did a search and didnt find out my answer. Mods if this need to be moved sorry. just wanted some replys fast.

OK, i will have a built motor by spring, most likely before then, with my turbo kit...i plan on running as much boost as the thing can handle...or close to it? 15-20 lbs i guess...

What size exhuast would you get? 2 1/2, 2.75, 3 inch? ive already started buying my parts, just waiting on this group buy for internals, need 4 more poeple!!!
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Old Oct 27, 2005
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Well if you put a 3 inch on now your going to lose back pressure like crazy. Once your turbo the three inch is a good thing though. I'd put on 2.5 or 2.75 for now and upgrade to three inch when your running double digit boost.
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Old Oct 27, 2005
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Originally Posted by Spracto
Well if you put a 3 inch on now your going to lose back pressure like crazy. Once your turbo the three inch is a good thing though. I'd put on 2.5 or 2.75 for now and upgrade to three inch when your running double digit boost.

no doubt..thing is now its going to be winter, and i could care less if i dont have all the hp or loose some hp and tq or whatever. as long as i dont mess anyhting up from now until feb...i would rather do it all in one shot then do 2.5 and then 3 inch later...but idk...
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Old Oct 27, 2005
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3 inch & no cat.
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Old Oct 27, 2005
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Originally Posted by stl01civic
3 inch & no cat.

well right now im running header no cat no resenator....toa apexi n1 NA.
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Old Oct 27, 2005
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Originally Posted by varner88
yea 3 inch and no cat and your set!! its worth doing now dont waste money on 2 diff exhuast setups

no doubt....yeah thats what im saying i didnt want to get something smaller now and then in a few months im going to have to change it...plus i have my turbo kit and **** i just waiting for this group buy for internals...then im on the road to getting a fully built d17.
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Old Oct 27, 2005
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I'd run 2.75"
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Old Oct 27, 2005
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Originally Posted by R1Style
I'd run 2.75"

yeah so you think 2.75 would be fine?

it will be installed next week. i cant wait, im pretty excited. it will give my rear to right touch at the right angle.
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Old Oct 27, 2005
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I'd say 2.75. Bottom line is you are only a 1.7L engine. Yes you will burn more fuel under increased boost, but it still won't be enough to warrant that big of a pipe.
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Old Oct 27, 2005
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Originally Posted by xX03EXx
I'd say 2.75. Bottom line is you are only a 1.7L engine. Yes you will burn more fuel under increased boost, but it still won't be enough to warrant that big of a pipe.
k 2.75 it is...good point..small engine and whatnot..

Btw i like your car and sig....very clean!
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Old Oct 27, 2005
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Originally Posted by varner88
yea also get the apexi turbo n1 i got it im waiting to put it on

when are you going to install it?
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Old Nov 15, 2005
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whats the biggest piping that poeple have oon there cars? NA and turbo'd??? 7thgen's that is! thanks!
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Old Nov 15, 2005
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Well, 15lbs of boost will put you in the 250whp range.

3" will work great.
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Old Nov 15, 2005
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Originally Posted by exturbo6
whats the biggest piping that poeple have oon there cars? NA and turbo'd??? 7thgen's that is! thanks!
2.5" will be fine for up to 400-500whp.
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Old Nov 16, 2005
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Originally Posted by dezod
2.5" will be fine for up to 400-500whp.

i c, but civic01vtec says 2 inch would be fine for 250hp...so i mean ill take that between 2.5 and 3 inch is ok to be turbo'd then.
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Old Nov 16, 2005
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Originally Posted by exturbo6
i c, but civic01vtec says 2 inch would be fine for 250hp...so i mean ill take that between 2.5 and 3 inch is ok to be turbo'd then.
For n/a, 2" is fine.
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Old Nov 16, 2005
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yes, but i wont be NA, in the spring ill be back to turbo'd again.
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Old Nov 16, 2005
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Originally Posted by exturbo6
i c, but civic01vtec says 2 inch would be fine for 250hp...so i mean ill take that between 2.5 and 3 inch is ok to be turbo'd then.

I said 3"

Originally Posted by civic01vtec
Well, 15lbs of boost will put you in the 250whp range.

3" will work great.
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Old Nov 16, 2005
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2.5 is just fine!! unless you dont like torque you will have more hp with 3" i guess, but less torque. with no cat no resonator and apexi muffler i think you will have enough flow with 2.5

yes 2.5 it is!!!!!!!
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Old Nov 17, 2005
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Originally Posted by civic01vtec
I said 3"

my bad..lol....typo..

what size are you running BTW?
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Old Nov 17, 2005
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3 inch is good for 350 hp, plus it would kill the back pressure. stick with 2.75 for now or you'd kill your trq.
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Old Nov 18, 2005
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Originally Posted by exturbo6
my bad..lol....typo..

what size are you running BTW?

stock

Money > me
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