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Old 08-08-2007, 04:29 PM   #1
Jonny07subie
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Member#: 152231
Join Date: Jun 2007
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Default downpipe...headers for 07 2.5i worth it?

i just bought an 07 2.5i and have been readin around the forum....

i kno that headers...downpipes etc benefits the wrx and sti but how about the 2.5i's? is it worth it? power increases?
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Old 08-08-2007, 04:31 PM   #2
mattyk04
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wrong forum dude
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Old 08-08-2007, 06:07 PM   #3
v8eaterWRX
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wrong forum dude
+1

and no, probably not worth it. best place would be the NA forum
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Old 08-08-2007, 06:42 PM   #4
Drowner
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you don't have a downpipe since you don't have a turbo.
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Old 08-08-2007, 11:09 PM   #5
BlkTS02
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Quote:
Originally Posted by v8eaterWRX View Post
+1

and no, probably not worth it. best place would be the NA forum
+2

Ask to have this thread moved to the proper forum and you'll get some info.

What have you found by searching?
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Old 08-08-2007, 11:27 PM   #6
Dforce
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Originally Posted by BlkTS02 View Post
What have you found by searching?
Quote:
Originally Posted by Jonny07subie View Post
...that headers...downpipes etc benefits the wrx and sti...

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Old 08-08-2007, 11:50 PM   #7
Uncle Scotty
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we have an Uncle

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.....it would be pointless to do anything more than get cat delete pipes for a new 2.5i.

do not even THINK that(without nitrous, anyway) you will get more than ~10hp more than stock outa a 2.5i without BUILDING the engine and spending $,$$$...not happenin....no
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Old 08-09-2007, 01:08 AM   #8
timesnap
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An intake adds more then 10hp..... so no you dont need to build the engine

http://forums.nasioc.com/forums/show....php?t=1156560
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Old 08-09-2007, 12:48 PM   #9
wrxtunerd
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Quote:
Originally Posted by Uncle Scotty View Post
.....it would be pointless to do anything more than get cat delete pipes for a new 2.5i.

do not even THINK that(without nitrous, anyway) you will get more than ~10hp more than stock outa a 2.5i without BUILDING the engine and spending $,$$$...not happenin....no

thats bull, the 2.5 na motor can pull a decent amount of horsepower out of some mods, not the same ratio of power per dollar as a turbo car's mods, but for NA, its still power.

An intake can give you some horses, but definately better throttle response and putting on header back exhaust with cat deletes can definately help get some power. I don't know about headers since I don't personally know anyone with them. Before I sold my 01 RS, with catback and short ram intake it made 134 to the wheels (with all cats) which is enought to not make it "pointless" seeing as how a stock wrx puts out around 170 horsepower to the wheels....


Plus maybe he just wants to mod it to mod it and he's not out to make tons of power, obviously if that were the case he wouldn't have purchased a 2.5i, but he can still have fun working on it nontheless.
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