Welcome to the North American Subaru Impreza Owners Club Saturday March 28, 2015
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Normally Aspirated Powertrain

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 09-09-2012, 01:47 PM   #1
robdizzy
Scooby Newbie
 
Member#: 328703
Join Date: Aug 2012
Chapter/Region: MAIC
Location: Pittsburgh, PA
Vehicle:
2010 Impreza 2.5i
Dark Grey Metallic

Default Looking to Improve on my 2.5i

Let me first start by explaining I am not a Guru when it comes to Subaru. I decided to jump into the Subaru market recently, when I was able to pick up a couple of 2010 Impreza Premiums with 15,000 miles for under $30k out the door (bought one for me and the wife). I currently work for a dealership (not a subaru dealership) and have the ability to get my hands on good aftermarket parts @ dealer discounts. So now starts the quest to improve on the car I purchased.

Before you post, please note that I have taken the time to read a ton of postings on this forum, so yes I know some info is already out there (or bigger question marks than before). I know I am not going to turn my NA into a 400HP monster leaving 4 smoking tires everywhere I go, its not what I am looking for.
Like I said before, I am looking to improve on the car I have come to really enjoy.

Ok, on to what I want to do with my current budgets.

Horsepower/Engine
Current car states 170HP @ the crank - looking to get 210 to 220HP and an overall improvement in response.
Budget Set - $2,000

Suspension/Handling
Looking to improve the overall feel of the vehicle's handling and look.
Budget Set - $1,000

Brakes/Traction
Want to improve the braking as much as possible (feel the nasty play in the brakes and don't care for it at all).
I already added some 04 BBS Wheels with Goodyear Eagle F1 for better traction.
Budget Set - $500


For now this is what I am working on. I am trying to get the best quality for my budget. Like I said, I am new to the subaru game and not sure what aftermarket parts are better quality and more reliable than others, so any info helps.
* Registered users of the site do not see these ads.
robdizzy is offline   Reply With Quote
Old 09-09-2012, 03:14 PM   #2
goregasm
*** Banned ***
 
Member#: 331656
Join Date: Sep 2012
Vehicle:
2012 2.0i
Marine Blue Pearl

Default

No... just...
no.
goregasm is offline   Reply With Quote
Old 09-09-2012, 03:17 PM   #3
rkam
Scooby Newbie
 
Member#: 262384
Join Date: Oct 2010
Chapter/Region: NWIC
Location: Sea-Tac
Vehicle:
2004 STI
WRB

Default

I have a 05 RS. The stuff I have done are full cat back exhaust, headers and intake. Not sure what my crank HP is but on the dyno it pulled 147 WHP. For the suspension I'd go with BC Racing BR Coilovers. Best $1k I've spent. Plus there are 30 points of adjustably.
rkam is offline   Reply With Quote
Old 09-09-2012, 04:59 PM   #4
XSV Klutch
Scooby Newbie
 
Member#: 259013
Join Date: Sep 2010
Chapter/Region: RMIC
Location: Colorado!
Vehicle:
2007 Impreza 2.5i
greyish

Default

You won't be able to get that power with that budget, I would recommend increasing your suspension budget and spend less on power mods.
XSV Klutch is offline   Reply With Quote
Old 09-09-2012, 09:08 PM   #5
mustardman
Scooby Newbie
 
Member#: 258718
Join Date: Sep 2010
Location: Burbs of Chicago
Vehicle:
07 2.5i

Default

Just do

Headers + HFC + Catback = ~$600(ish) depending on new/used/quality
Intake = $70-120 used/new
Cams = $150-200 (Most cost effective mod)
Port and Polish = Purely based on what you PnP and if you do it yourself
Total = ~$1k(ish)

For responsiveness
LW Crank Pulley = $100
Pitch Stopper= $100
Short Shifter = $100
Weight Reduction
Total = $300

Handling
Coilovers = ~1k (buy a quality set) OR Struts/Springs = $600
Rear Sway Bar = $180 + Endlinks ($120) = $300
Total= $900

GRAND TOTAL= ~$2,200
That right there will get you a car that has about 200-215hp at the crank, if you make the car very light (smaller battery, no spare tire, lighter wheels/smaller tires, cf body parts, interior stripping etc.) than you improve on your weight/power ratio and the car becomes faster. At the same time the handling will also increase as the car becomes lighter. Don't go all out if its only a street car but if you have high goals I hope you have deep pockets.
mustardman is offline   Reply With Quote
Old 09-09-2012, 10:48 PM   #6
robdizzy
Scooby Newbie
 
Member#: 328703
Join Date: Aug 2012
Chapter/Region: MAIC
Location: Pittsburgh, PA
Vehicle:
2010 Impreza 2.5i
Dark Grey Metallic

Default

Thanks for the input mustardman and rkam... Any certain brands I should be looking for when buying a catback, headers, hfc, as well as all the other stuff listed?

Really trying to find specific brands that are on the quality/reliable end within my budgets.
robdizzy is offline   Reply With Quote
Old 09-10-2012, 12:34 AM   #7
mustardman
Scooby Newbie
 
Member#: 258718
Join Date: Sep 2010
Location: Burbs of Chicago
Vehicle:
07 2.5i

Default

Headers: Borla/Rallisport/Tsudo (some ebay ones work too)
HFC: Stromung/Magnaflow/Rallisport
Catback: Stromung/Invidia/Flowmaster/Magnaflow/HKS/Apexi
Intake: Injen or DIY
Cams: Call Delta!
Crank Pulley: Cobb/Grimmspeed/Perrin (they barely differ in weight)
Short Shifter: Cobb/Kartboy
Coilovers: ISC N1/BC/Tokico (all offer a ~$1k coilover)
Sway Bar/Endlinks: Whiteline/Perrin/Cusco/Eibach
Struts: KYB/Tokico
Springs: Eibach/Tanabe/Epics
mustardman is offline   Reply With Quote
Old 09-10-2012, 03:27 AM   #8
Bababou
Scooby Newbie
 
Member#: 280689
Join Date: Apr 2011
Chapter/Region: SWIC
Location: Glendale, Az
Vehicle:
2010 2.5i Impreza
Newport blue

Default

Finally this has been answered with good info and nobody saying its impossible or a waste of time.... I knew this day would come


I didnt know cams were so affordable, may need to look into a set if there only in the $200 range.
Bababou is offline   Reply With Quote
Old 09-10-2012, 09:08 AM   #9
robdizzy
Scooby Newbie
 
Member#: 328703
Join Date: Aug 2012
Chapter/Region: MAIC
Location: Pittsburgh, PA
Vehicle:
2010 Impreza 2.5i
Dark Grey Metallic

Default

Yeah, figured I would try and get detailed info on some of these items.. thanks again mustardman!!! that makes it a lot easier when searching for parts online
robdizzy is offline   Reply With Quote
Old 09-10-2012, 10:43 AM   #10
Bluefoton
Scooby Specialist
 
Member#: 141373
Join Date: Feb 2007
Chapter/Region: E. Canada
Location: Quebec, QC
Vehicle:
2008 2.5i-hatch -
now with a HID retrofit

Default

No way... a coherent, well written, and precise question on 2.5i upgrades.. AND an equally constructive answer? I must be hallucinating

Op, one would assume you take care of the labour part? If you factor installation, cams are anything but 200$..
Bluefoton is offline   Reply With Quote
Old 09-10-2012, 12:00 PM   #11
mustardman
Scooby Newbie
 
Member#: 258718
Join Date: Sep 2010
Location: Burbs of Chicago
Vehicle:
07 2.5i

Default

Quote:
Originally Posted by Bluefoton View Post
No way... a coherent, well written, and precise question on 2.5i upgrades.. AND an equally constructive answer? I must be hallucinating

Op, one would assume you take care of the labour part? If you factor installation, cams are anything but 200$..
Exactly! All these prices are if you do the installs...cams are the best and most cost effective mod you can do (if you can install themselves). Having a shop install them will cost you $$$$...of course you can find a local who is skilled that can assist you in instillation for a FRACTION of the cost.


I LOVE THIS THREAD ON RS25!!! Its an on going debate on how to make power just off of bolt ons...however when you start doing machine work your car begins to make some good gains. This forum in my eyes has much more support for n/a cars as all the pre-02 Impreza's in the U.S. weren't turbo'd.

Enjoy
http://www.rs25.com/forums/f5/t2912-...-bolt-ons.html
mustardman is offline   Reply With Quote
Old 09-10-2012, 12:07 PM   #12
bondo007man
Scooby Specialist
 
Member#: 247030
Join Date: May 2010
Chapter/Region: MWSOC
Location: The University Of Cincinnati
Vehicle:
Stop Looking At Me
Swan

Default

Sell your 2.5i take all that money you were going to buy in upgrades and BUY A 2006 or 2007 WRX!
bondo007man is offline   Reply With Quote
Old 09-10-2012, 12:17 PM   #13
treksofar
Scooby Newbie
 
Member#: 208070
Join Date: Apr 2009
Chapter/Region: NESIC
Location: West Boylston, MA
Vehicle:
2006 Impreza 2.5i
Regal Pearl Blue

Default

Quote:
Originally Posted by bondo007man View Post
Sell your 2.5i take all that money you were going to buy in upgrades and BUY A 2006 or 2007 WRX!
^^^^There's always one...
treksofar is offline   Reply With Quote
Old 09-10-2012, 01:27 PM   #14
robdizzy
Scooby Newbie
 
Member#: 328703
Join Date: Aug 2012
Chapter/Region: MAIC
Location: Pittsburgh, PA
Vehicle:
2010 Impreza 2.5i
Dark Grey Metallic

Default

Quote:
Originally Posted by bondo007man View Post
Sell your 2.5i take all that money you were going to buy in upgrades and BUY A 2006 or 2007 WRX!
LOL, I knew it was only a matter of a day or 2 before someone would post "BUY A WRX"..... No thank you
robdizzy is offline   Reply With Quote
Old 09-10-2012, 02:32 PM   #15
bondo007man
Scooby Specialist
 
Member#: 247030
Join Date: May 2010
Chapter/Region: MWSOC
Location: The University Of Cincinnati
Vehicle:
Stop Looking At Me
Swan

Default

I have a 2.5i please take it from me
bondo007man is offline   Reply With Quote
Old 09-10-2012, 02:34 PM   #16
bondo007man
Scooby Specialist
 
Member#: 247030
Join Date: May 2010
Chapter/Region: MWSOC
Location: The University Of Cincinnati
Vehicle:
Stop Looking At Me
Swan

Default

Quote:
Originally Posted by treksofar View Post
^^^^There's always one...
Quote:
Originally Posted by robdizzy View Post
LOL, I knew it was only a matter of a day or 2 before someone would post "BUY A WRX"..... No thank you
I couldn't help it

bondo007man is offline   Reply With Quote
Old 09-10-2012, 02:34 PM   #17
Bluefoton
Scooby Specialist
 
Member#: 141373
Join Date: Feb 2007
Chapter/Region: E. Canada
Location: Quebec, QC
Vehicle:
2008 2.5i-hatch -
now with a HID retrofit

Default

Retrofit your headlights too, if you like to get your hands dirty. Suspension-wise, I'm going the opposite route and contemplating 1" strut spacers.
Bluefoton is offline   Reply With Quote
Old 09-10-2012, 03:08 PM   #18
GrundleJuice
NASIOC Supporter
 
Member#: 165749
Join Date: Dec 2007
Chapter/Region: South East
Location: ლಠ益ಠ&
Default

Keep in mind the gains from cams depends heavily on the headers. Cams + borla headers is not anywhere as effective as cams plus twe headers.
GrundleJuice is offline   Reply With Quote
Old 09-10-2012, 03:17 PM   #19
robdizzy
Scooby Newbie
 
Member#: 328703
Join Date: Aug 2012
Chapter/Region: MAIC
Location: Pittsburgh, PA
Vehicle:
2010 Impreza 2.5i
Dark Grey Metallic

Default

Quote:
Originally Posted by bondo007man View Post
I couldn't help it

I was waiting for it lol.... knew it was gonna happen!!!
robdizzy is offline   Reply With Quote
Old 09-10-2012, 03:19 PM   #20
robdizzy
Scooby Newbie
 
Member#: 328703
Join Date: Aug 2012
Chapter/Region: MAIC
Location: Pittsburgh, PA
Vehicle:
2010 Impreza 2.5i
Dark Grey Metallic

Default

Quote:
Originally Posted by RaceFaceXC View Post
Keep in mind the gains from cams depends heavily on the headers. Cams + borla headers is not anywhere as effective as cams plus twe headers.
Yeah it seems that the winner for headers is TWE.... mostly all of the threads I read say they are clearly the choice for performance.
robdizzy is offline   Reply With Quote
Old 09-10-2012, 03:23 PM   #21
robdizzy
Scooby Newbie
 
Member#: 328703
Join Date: Aug 2012
Chapter/Region: MAIC
Location: Pittsburgh, PA
Vehicle:
2010 Impreza 2.5i
Dark Grey Metallic

Default

Quote:
Originally Posted by Bluefoton View Post
Retrofit your headlights too, if you like to get your hands dirty. Suspension-wise, I'm going the opposite route and contemplating 1" strut spacers.
The nice thing about working for my dealership is ACCESS TO THE TOOLS lol..... Plus one of the mechanics used to have a STi that he completely modded out, so I have a decent source for knowledge when needed.

for the record, HE ALSO SAYS BUY A WRX!!!!
robdizzy is offline   Reply With Quote
Old 09-10-2012, 03:24 PM   #22
mustardman
Scooby Newbie
 
Member#: 258718
Join Date: Sep 2010
Location: Burbs of Chicago
Vehicle:
07 2.5i

Default

Quote:
Originally Posted by robdizzy View Post
Yeah it seems that the winner for headers is TWE.... mostly all of the threads I read say they are clearly the choice for performance.
They are also the most expensive headers around...they won't get you the subie rumble we all love. I wouldn't personally get them cause I LOVE the growl my car has. Plus I bought my borlas for 200 shipped...much cheaper. I used the money I saved to buy the rest of my exhaust lol
mustardman is offline   Reply With Quote
Old 09-10-2012, 03:27 PM   #23
robdizzy
Scooby Newbie
 
Member#: 328703
Join Date: Aug 2012
Chapter/Region: MAIC
Location: Pittsburgh, PA
Vehicle:
2010 Impreza 2.5i
Dark Grey Metallic

Default

Quote:
Originally Posted by mustardman View Post
They are also the most expensive headers around...they won't get you the subie rumble we all love. I wouldn't personally get them cause I LOVE the growl my car has. Plus I bought my borlas for 200 shipped...much cheaper. I used the money I saved to buy the rest of my exhaust lol
Yeah I seen that, where did you get your borla headers from? Got a link?
robdizzy is offline   Reply With Quote
Old 09-10-2012, 03:29 PM   #24
mustardman
Scooby Newbie
 
Member#: 258718
Join Date: Sep 2010
Location: Burbs of Chicago
Vehicle:
07 2.5i

Default

I got mine second hand. If you go to rs25.com and look at the N/A for sale ad's there will be plenty there that you can get for 200ish. However my knowledge of 08+ 2.5i's isn't too solid. So I suggest doing research on what else you need to purchase to make it fit
mustardman is offline   Reply With Quote
Old 09-10-2012, 03:38 PM   #25
robdizzy
Scooby Newbie
 
Member#: 328703
Join Date: Aug 2012
Chapter/Region: MAIC
Location: Pittsburgh, PA
Vehicle:
2010 Impreza 2.5i
Dark Grey Metallic

Default

right now I'm going to try and get the simple items out of the way... Was thinking of stainless brake lines and adding EBC 3GD Rotors with Redstuff pads. I'm hoping this will sure up the braking situation.

Next will be the Headers/HFC/Catback.... still haven't decided on what i'll use for this configuration.
robdizzy is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 11:32 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2015 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.