04 unmodified wrx, what mods should I start with?


Asked by Jan 15, 2011 at 10:52 PM about the 2004 Subaru Impreza WRX STI

Question type: Car Customization

Yea, just bought a 2004 WRX and I want to know the with what mods should I start with to get horsepower to drift?

6 Answers


The first thing you should do is get a new up pipe, downpipe, exhaust and accessport.

1 of 1 people found this helpful.

change your air filter, either keep the panel filter but upgrade it to like a k&n 1...if u wanted to spend the cash a CAI( cold air intake) pipe..pretty much it's a pod filter but instead of in your engine bay it's in the gard so it's getting fresh cold air instead of hat air from your engine bay...maybe invest is a aftermarket plumb back BOV, a boost tee so u can up the boost a lil...but not too much..the standard engine wont be strong enough for a sustained anything over 18psi, 3inch exhaust also works well..from the turbo back it really depends how much u wanna spend...like u could go straight and get a ecu tune.. but for a estimated 30kw gain out of stock everything wouldnt be worth it yet untill u have the said items yet...

1 of 1 people found this helpful.

Nathan is right.. cant say more

ECU tuning (COBB TUNING is great)


listen the current computer will control the valves at the same rate COLD AIR INTAKE OR NOT THE COMPUTER COMPENSATES FOR THE ADDITIONAL AIR, there is no horse power gain (i dont care what a box says), until you leave the intake valves open a longer duration....reprogram the ecu (called chipping it) adjust the cams, (larger), increase the exhaust size,"headers", and to drift are you on dirt or road? spent a few years in the drift scene, so I have much background in the style, removing the front drive shaft works best, it's almost impossible to get a awd car to drift on road without the ground being wet., dirt is easier, but still rear wheel drive is recommended, start on dirt, it is much easier and cheaper on tires, then see if your vehicle has a heavy duty wheel bearing/axle kit to sustain the side pressures, or all the horsepower in the world wont help the rest of the drive-train.....

Ugh WHY would you modify such a beautiful, clean car? I weep for humanity that all these excellent cars are being ruined by children.

Your Answer

Impreza WRX STI

Looking for a Used Impreza WRX STI in your area?

CarGurus has 513 nationwide Impreza WRX STI listings starting at $9,800.


Subaru Impreza WRX STI Experts

  • #1
    Brian Dombroski
  • #2
    Tom Demyan
  • #3
    Charlie Arledge
View All

Related Models For Sale

Used Subaru Impreza WRX
30 Great Deals out of 1,132 listings starting at $2,980
Used Mitsubishi Lancer Evolution
9 Great Deals out of 538 listings starting at $14,000
Used Ford Mustang
317 Great Deals out of 38,894 listings starting at $1,995
Used BMW M3
21 Great Deals out of 1,736 listings starting at $5,495
Used Nissan 350Z
33 Great Deals out of 1,043 listings starting at $3,950
Used Subaru Impreza
177 Great Deals out of 21,057 listings starting at $1,333
Used Honda Civic
398 Great Deals out of 52,416 listings starting at $1,200
Used BMW 3 Series
951 Great Deals out of 33,308 listings starting at $1,300

Used Cars For Sale

2014 Subaru Impreza WRX STI For Sale
63 listings starting at $22,490
2013 Subaru Impreza WRX STI For Sale
3 Great Deals out of 87 listings starting at $18,998
2012 Subaru Impreza WRX STI For Sale
47 listings starting at $17,995
2011 Subaru Impreza WRX STI For Sale
4 Great Deals out of 85 listings starting at $15,999
2010 Subaru Impreza WRX STI For Sale
18 listings starting at $16,900

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.