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Old 08-17-2003, 06:21 PM   #1
gofobroke
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Member#: 41919
Join Date: Aug 2003
Location: Corpus Christi TX
Vehicle:
02 WRX
Blue

Default WRX vs WRX STI

I have a heavily modified 02 WRX, waiting to get it back from the tuners, looking at around 300 to 330 at the wheels, spent alot of money and now comes the STI. I think i could build a stock WRX with all the parts I have. I love my car but I hear how superior the STI is, will it be as tunable as the WRX for 150-200 ponies or is it close to maxed out already? I would suspect this to be the case with the EVO running 19lbs of boost stock.
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Old 08-18-2003, 01:57 AM   #2
rlavalle
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Member#: 18384
Join Date: May 2002
Location: Seattle 'burb (Kirkland)
Vehicle:
2004 STi: 580 AWHP
Java Black Pearl

Default

I bought an STI even though I had my WRX at a stage 4 (VF34) level w/FMIC, suspension and brake (StopTech) mods. It was an incredible car, but a little laggy (not bad, but poor torque down low). I was careful to baby it for fear of killing the clutch or transmission.

The reason I bought the STI is it's potential. While the WRX tranny would probably be OK unless abused, I really wanted the bulletproof STi Transmission & drivetrain.

Even though the STi's 2.5 liter engine is unproven as far as mods go, I think the extra 25% displacement will prove useful. Tuners have seen 25+ HP increases with just Turbo Back Exhausts. 25 more may be an ECU Reflash/UTEC away (there'll be a bit more of a wait on these). Throw a larger turbo on and say hello to 400 crank horsepower! Meanwhile, you have a tranny that can take it, huge brakes, great suspension and gobs of low end torque.

Different people will have different criteria. The hassle of stripping a WRX back to stock and taking the hit on the trade/resale, plus the premium of the STi may not be worth it to many.

It's a no brainer to folks considering buying a WRX & modding it or buying an STi and making fewer mods. For those with a modded WRX already, it's not so cut & dried.

As you can tell, I'm super happy with my STi and have not looked back.

Russ
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Old 08-18-2003, 02:21 AM   #3
Janq
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Join Date: Feb 2003
Chapter/Region: MAIC
Location: Where ever I lay my hat is my
Vehicle:
1993 Legacy L+ AWD
Phoenician blue met./blue

Default Re: WRX vs WRX STI

Quote:
Originally posted by gofobroke
I have a heavily modified 02 WRX, waiting to get it back from the tuners, looking at around 300 to 330 at the wheels, spent alot of money and now comes the STI. I think i could build a stock WRX with all the parts I have. I love my car but I hear how superior the STI is, will it be as tunable as the WRX for 150-200 ponies or is it close to maxed out already? I would suspect this to be the case with the EVO running 19lbs of boost stock.
The EVO has already been proven not to be maxed out as with as little as $2K out of pocket (Retail) folks are seeing a real 34HP increase via very slight ECU mods thanks to Vishnu and WORKS.
More can and is being done as the EVO motor is well known to be virtually indestructable. I hear via EvolutionM.net of some guy already hitting over 400HP with no internal work (!).
Beware modded EVO's. Funny thing is I don't see many at all in my area though dealers swear they are selling out faster than sticky green at a Snoop Dogg concert.

The STi comes stock with parts that are just too expensive to install on a WRX without a sponsorship or extraordinarily deep pockets including the 6 speed, DCCD, Brembo brakes, and 2.5L w/ AVCS long block providing _nice_ low end torque.
Now of course one could buy all these items ala carte and retrofit them to a WRX, but its much cheaper to just get an STi...and a 3yr/36K mile warranty to boot.

As for being maxed out the early reports via God is that it's roughly near 85% max. power. Its been said the turbo is relatively tiny and an upgrade is required to make over 400HP and he's working on reverse engineering both the ECU as well as higher flow injectors. Go to ClubWRX.com for more info and specifics.

The bottom line is that as the 2.5L with AVCS is essentially a new & untried engine no one yet knows for sure. Keep in mind this thing was hit the streets just 4-5 months ago. More will be known in the coming months.

Your decision to go modded WRX or STi all comes down to what your wallet can withstand. From the sounds of it you'll be or already have spent STi on money on your WRX. If it were me I'd go STi and call it a day.

- Janq
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Old 08-18-2003, 09:35 PM   #4
gofobroke
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Join Date: Aug 2003
Location: Corpus Christi TX
Vehicle:
02 WRX
Blue

Default wrx/sti

I totally agree the stock tranny is weak and my synchros are already half baked, the warranty issue is also a great point. Lag is a big issue with the wrex, I have some fancy heads with a cam advance and vtec that supposedly gives some 30lbs of low end torque but we will see since the tuners are needed to hook that up to the ECU. As for brakes and suspension I have the big brake kit and suspension mods for real good road race handling. I am too far into it now and the wallet has taken a beating. It sounds like the sti is the much better foundation and will be sick fast for less money than my WRX. I will have to bide my time and get it right the next time. When I get my car back I will go drive an sti, and then I will know for sure. God I hope I don't trade my WRX right there. The wife........
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Old 08-18-2003, 11:27 PM   #5
SubiDo
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Member#: 16211
Join Date: Mar 2002
Vehicle:
2004 WRX STi
PSM

Default

I think the biggest drawback now is there isn't any computer mods for it. I know TXS is working on one (UTEC) and had ordered a batch of connectors when I called a few weeks ago. I am anticipating that it will be just as modable, if not more than, a standard WRX in 6 months.

I too ditched my 2002 WRX for the STi driveline (tranny and diffs) . I didn't have any transmission issues other than the freakin' clutch shudder. No shudder at all in the STi. It feels so much more solid than the WRX all the way around.

I will be bolting on my turboback next week and am looking forward to the additional 27.8 wheel horsepower from this.

What I don't miss from my WRX is that nasty open front differential and HUGE gap between 1st and 2nd gear.

Not sure if this helps or not.
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