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Old 09-02-2002, 09:52 PM   #1
Demon_Dub
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Default Newbie: Looking at a new wrx, can I get some advise on power mods?

I am deciding between a new VW 1.8t and a new WRX for my new project and am pretty much in the dark for scoobie tuning. I am looking to increase the power of the car without making reliability (specificly not starting, runing poorly, etc) and drive ability an issue. What are some good mods to use together, packages, and other such without upping the turbo right away.

Thanks
Phill
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Old 09-02-2002, 10:02 PM   #2
dman918
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Hi,
Uppipe, turboback exhaust, unichip or some type of engine management with boost control, intercooler hoses, pulley, CAI (debated but I felt a little difference). After that, it seems to me there are larger upgrades: turbo, FMIC, headers.
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Old 09-02-2002, 10:29 PM   #3
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Thanks for the reply, could you go into detail a little about those mods??I have been trying to research it independently but am just getting confused. I have built VW's forever and this is my first outside attempt. I am used to having all my software premade needing no tuning. I have no idea what an up pipe is and have no clue where to begin looking for those parts. I really mean newbie when I say it lol!
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Old 09-02-2002, 10:38 PM   #4
tolnep
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After reading all the stuff on this forum, this is what you might aim at. Realize that it is probably mostly un-obtanium....www.unobtainium.com Well its expensive. Below prolly cost more than the car...

Anyway..

Go to Cobb.. get their most radical long block. Think it uses a 2.5 stroker, high output cams.. A nice light flywheel too.

Then add (well here I really get confused, but) basically a custom built turbo setup consisting of a large turbo, headers, a separate waste gate and separate waste gate exhaust, a larger front mounted intercooler. A motec or TecIII brain. And a catless 3 inch exhaust. Might as well remove the muffler too and just go straight through. Ignore the background chatter about twin turbos... Unless you can figure out how to put a Porcshe 911 engine in you car and at this point you might as well go ahead and buy the Porche. But they're expensive. A friend of mine bought a used one for 150,000....(turbo of course. only had 2000 miles).

At this point you need to replace the stock trans with an STI 6 or a dogbox (MRT maybe). And do the diffs while your at it.

I never pay a lot of attention to the suspension but replace the stock wheels and tires, breaks, strut towers. Strut tower braces, and adjustable sway bars.

Of course you need a good EGT, boost, A/F (fjo wideband) meter. Fuel pressure too. And I forgot STI injectors, walpro or whatever fuel pump (although the Supra seems to be better).

Haven't seen anything here about oil coolers, dry sumps, but maybe I haven't found those threads yet.

This can become endless. I was into this stuff with 240/280z, 510s. I knew a guy in Atlanta that built custom turbos. One customer had maybe 70,000 invested in a Datsum 510. Had a Buick v6 (I think). Twin turbos, Mercedes fuel injection, on-board fire extinguisher system, fuel cell, full cage and race harness, Corvette disk breaks all around, on and on and on and on.......this was a street car. Don't think it drag-raced. May have done walter middy at road atlanta though...

I had BMW M3. I sold it a year ago. I was reluctant to mod that thing. It would have gotten mad. Now that I'm back into more affordable stuff I can already hear that sucking sound.
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Old 09-02-2002, 10:42 PM   #5
Demon_Dub
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Quote:
Originally posted by tolnep
After reading all the stuff on this forum, this is what you might aim at. Realize that it is probably mostly un-obtanium....www.unobtainium.com Well its expensive. Below prolly cost more than the car...

Anyway..

Go to Cobb.. get their most radical long block. Think it uses a 2.5 stroker, high output cams.. A nice light flywheel too.

Then add (well here I really get confused, but) basically a custom built turbo setup consisting of a large turbo, headers, a separate waste gate and separate waste gate exhaust, a larger front mounted intercooler. A motec or TecIII brain. And a catless 3 inch exhaust. Might as well remove the muffler too and just go straight through. Ignore the background chatter about twin turbos... Unless you can figure out how to put a Porcshe 911 engine in you car and at this point you might as well go ahead and buy the Porche. But they're expensive. A friend of mine bought a used one for 150,000....(turbo of course. only had 2000 miles).

At this point you need to replace the stock trans with an STI 6 or a dogbox (MRT maybe). And do the diffs while your at it.

I never pay a lot of attention to the suspension but replace the stock wheels and tires, breaks, strut towers. Strut tower braces, and adjustable sway bars.

Of course you need a good EGT, boost, A/F (fjo wideband) meter. Fuel pressure too. And I forgot STI injectors, walpro or whatever fuel pump (although the Supra seems to be better).

Haven't seen anything here about oil coolers, dry sumps, but maybe I haven't found those threads yet.

This can become endless. I was into this stuff with 240/280z, 510s. I knew a guy in Atlanta that built custom turbos. One customer had maybe 70,000 invested in a Datsum 510. Had a Buick v6 (I think). Twin turbos, Mercedes fuel injection, on-board fire extinguisher system, fuel cell, full cage and race harness, Corvette disk breaks all around, on and on and on and on.......this was a street car. Don't think it drag-raced. May have done walter middy at road atlanta though...

I had BMW M3. I sold it a year ago. I was reluctant to mod that thing. It would have gotten mad. Now that I'm back into more affordable stuff I can already hear that sucking sound.

Haha um....did you read my first post??
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Old 09-02-2002, 10:43 PM   #6
mexicanpizza
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Up-pipe = feeds the turbo from the exhaust manifold. The stock pipe has a catalytic converter in it and thus restricts spool up time. Aftermarket replacements can be had for ~$150-350 and are a great mod.

Downpipe = spent exhaust exits from turbo. More cats here...two to be exact. Replacing/removing these can yield significant HP/TQ on otherwise stock cars.

I'm sure you've heard of MBC's or EBC's that let you dial in higher boost. Great for the WRX as we're boost limited in the first two gears, even if you don't run greater-than-stock levels.

If you want to get slightly more serious, piggyback computers (ie. Unichip) can be had that tweak engine parameters to get more power. The downside is that they must be tuned by a "tuner" for your specific mods, and every time you add mods. Usually...mail it away, wait, drop it in.

Along these lines, I'd look at Vishnu Stage Zero (www.vishnutuning.com) or TurboXS Stage One (www.turboxs.com) for well thought out and put together kits of initial mods. Both of which will ad 30-40 wheel horsies.

Of course one can get way more serious, into the realms of bigger turbos, injectors, front mounted intercoolers, and the obligatory self sufficient engine managment that goes along with that.

Good luck, hope this helps...

-=Eric
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Old 09-02-2002, 10:45 PM   #7
BADWRX
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Actually, if you like your transmission, I wouldn't recommend any power mods.

I had a bunch, and my transmission went, so I took them off, and was running stock, and the new transmission went.

I wouldn't buy a WRX if I were you. Wait 3 months and get the Lancer Evolution!

Andy
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Old 09-02-2002, 10:53 PM   #8
Strng1dah
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All I want out of my car is high 12s at some point, probably with some race gas.

My plan as of right now is...

MRT Turboback
Vishnu Up-Pipe
Samco IC hoses
TXS UTEC
VF30
STi Inejctors

If my goal is doable without the upgraded turbo(vf30 in this case) all the better. I never knew what an up-pipe was before I bought this car, it is the exhaust pipe which routes up to the turbo from the exhaust manifolds.

These horizontally opposed engines take a little getting used to.

edit:spelling ownz me

Last edited by Strng1dah; 09-02-2002 at 11:08 PM.
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Old 09-02-2002, 10:54 PM   #9
Strng1dah
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Quote:
Originally posted by BADWRX
Actually, if you like your transmission, I wouldn't recommend any power mods.
I had a bunch, and my transmission went, so I took them off, and was running stock, and the new transmission went.
I wouldn't buy a WRX if I were you. Wait 3 months and get the Lancer Evolution!
You have to pay to play
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Old 09-02-2002, 11:00 PM   #10
tolnep
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Quote:
Originally posted by Demon_Dub



Haha um....did you read my first post??
Yes. I've been trolling this forum for a while. I just bought a 2003 WRX. If I like it and if it holds together, I'm gonna mod it up some eventually. There seems to be an underlying theme that you sort of pick up here after a while. Especially with things that up the power. Basically they are compromises. The point is to up boost some, or earlier or in more gears or some combination of all of that. So, they work buy interfacing with the existing system. They keep the waste gate closed longer, or in more gears. They tweak this or that. The results seem to be higher EGT, spikes, compromised trans (althought the jury is out on this one, the trans seems to be a sore point perhaps weak no matter what you do).

I'm still looking over what can (and should) be done. Whatever I do, I don't want to build a grenade. Afterall, I just bought the thing. If I keep it long enough (say beyond 3 or 4 years) and it eventually explodes, I guess that's OK. I just dont want to take years off of its life immediately. I'm looking for (I think) a more complete (and expensive I guess) solution to increases HP that at least makes feel like the whole thing was engineered off a piece.

What you might do is open up the exhaust. Start with the uppipe, then then downpipe back through the muffler. Keep 1 cat. My guess is that a header (in front of the up pipe) is not worth the money. But I could be wrong. After you have done the above, you need to make sure that the thing performs without spikes and higher EGT. I would want to install a good EGT and boost gauge before I started and compare the results afterwards. Look around for recommendations for these two items.

Beware the warranty trolls. If you mod your car and it breaks for any reason and they don't like you they will put you in subaru prison where you have to pay boo-coo buks before they let you drive again....
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Old 09-02-2002, 11:08 PM   #11
tolnep
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Quote:
Originally posted by Strng1dah
All I want out of my car is high 12s at some point, probably with some race gas.

My plan as of right now is...

MRT Turboback
Vishnu Up-Pipe
Samco IC hoses
TXS UTEC
VF30
STi Inejctors

If my goal is doable without the upgraded turbo(vf30 in this case) all the better. I never knew what an up-pipe was before I bought this call, it is the exhaust pipe which routes up to the turbo from the exhaust manifolds. These horizontally opposed engines take a little getting used to.
If you do all of above, get a new Trans.

The up-pipe is a Subaru invention. And really becomes an issue because it has the first of 3 cats. Since it sits between the turbo and its lunch, it is the first thing to address....
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Old 09-04-2002, 06:53 PM   #12
subineer
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Quote:
Originally posted by BADWRX
Actually, if you like your transmission, I wouldn't recommend any power mods.

I had a bunch, and my transmission went, so I took them off, and was running stock, and the new transmission went.

I wouldn't buy a WRX if I were you. Wait 3 months and get the Lancer Evolution!

Andy

Hmm, new transmission went with stock? I bet if he had an EVO, the transmission would go too. User error?
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Old 09-04-2002, 09:37 PM   #13
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I would agree on the first guess being user error. Lancer trannies aren't bulletproof, trust me. STi trannies aren't bulletproof. It's AWD. Slam it and it'll slam back. Be nice. Play along. If you have monster power, just roll off easy and then roll into it in second gear. You don't need to pretend you're drag racing for your pink slip.
2003 WRX trannies are supposed to be different. A rally company told me they were using STi gears now, but I can't confirm that, nor do I necessarily believe it. Barring manuf. defects, it's down to the operator.
Lancers have more power, WRX's have better handling.

www.Quantum-Racing.com
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Old 09-05-2002, 07:27 AM   #14
Avedis
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Sounds like you'd like one of these:

Vishnu stage 0
Cobb Tuning Club-Spec
TurboXS stage 2

They're all well thought-out, had time to get "polished", and have all been reviewed numerous times as "the way it should have come from the factory". Read up on all three, see whose tuning philosophy you agree with the most, and go with them.

http://www.vishnutuning.com/
http://www.cobbtuning.com/
http://www.turboxs.com/

--jeff
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Old 09-05-2002, 10:24 AM   #15
Kha0S
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New tires and a driving school.

/Andrew
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Old 09-05-2002, 10:46 AM   #16
MadWagon
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I agree, the WRX is a very fast street car in stock form. Just ditch the OEM tires and put on slightly better brake pads (Axxis Deluxe for example). Learn how to drive the stock ECU and learn how to drive and shift an AWD tranny, it's not as easy as people think. You have to be careful with it, I can totally see how people are having problems. Open up your exhaust once you get to know your car. By that time you'll have learned more about your WRX and other options and what you want out of the car.
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Old 09-05-2002, 12:25 PM   #17
nt5k
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Quote:
Originally posted by Kha0S
New tires and a driving school.

/Andrew
This suggestion gets my vote..

unless you're also getting the Richard Burns chip which will drive the car for you..
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