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Discussion Starter #1
Here are just a few snipits I've found while cruizing around over at impreza.net

- stock max boost will be 14.5 psi....only 1 psi higher than the WRX
- the turbo will not be the rumored VF34, but a new IHI ball bearing turbo.
- no preturbo cat

These are just rumors floating around from a few of the smarter people over there. These are all pretty interesting.....the most interesting being that if this is true...

EVO - 271 hp on 19 psi
STi - 300 hp on 14.5 psi

Can anyone say potential????

Now we just need to learn more about the suspension!

Just a few tidbits while I'm bored.
 

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The 14.5 psi thing was in the latest pdf from media.subaru.com (so it's official), but I have not yet heard about the others. I'm wondering how much more boost I can take, with only 91 octane available around here. It's been a while since I've filled up in Kansas. Is 93 sold there?
 

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Discussion Starter #3
I've seen 92 pretty frequently in KC, but I'm sure you can find 93 somewhere.

I'm pretty new to the KC area, so I'll have to scout it out. There's nothing over 91 in Manhattan, that's for sure.
 

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That seems odd to me because over here at just about every Sunoco they have 94 octane 8)

Some arn't as lucky I guess? :roll:
 

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Discussion Starter #5
Yeah, it's amazing how different parts of the country have different gas.

Hell, we usually only have 3 grades here in the Midwest, but you go to Chicago, and some stations have like 6 grades of gas at each pump.

DAMN
 

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91 octane in California. (for a cool $2.25) :eek:

By the way the VF34 is a ball bearing turbo. Possibly a VF35?
(A VF34 at 15psi will flow easily 300hp crank on the WRX (2.0) On the other hand with 93-94 octane it will run 18 and more psi. I cannot even think what it would do on a 2.5l) :eek:


I think the precat makes the WRX the LEV vehicle for California. I also think every car sold in California must be LEV soo..

From the pics in NASIOC of the under carriage the exhaust looks to have two cats (downpipe, mid pipe). Now uppipe not easy to tell :)

side rumors :)

I have heard (from people with WRX that did a transplant of a JDM STi engine that the AVCS does not react well to the standard manual/electronic boost controlers and fuel computers. Not sure if any after market ECU's can deal with the variable valve timing (AVCS). I have big hopes on the ECUtec reflash that works well in the WRX but I am guessing it's a virgin territory for the STi (especially the USDM STi).

Cheers

Nick
 

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Heheheheh. Where i live there is no emissions testing at all. :eek: I have never had to have a single vehicle i drive tested before. Hell my Type R was running a hollowed out JDM Type R cat(basically a straight pipe). Loud as hell but ohhhh so much power. The environment doesn't like me much though. 8) An acura tech did give me some grief about it once. I thought the bastard was gonna call the feds on me, what with the way he was talking. Anyways my STI is gonna lose the cats and have one heck of a non-restrictive exhaust system when it comes to power tuning time.
 

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Hey, I thought you live In Illinois? Unless your vehicles are registered somewhere else. My Supra is catless. Simple bolt on and off when the time comes. I also don't drive my Supra everyday. If the STi is easily "fixable" when the time comes then something might happen to the cats. :wink:
 

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Discussion Starter #10
Removing cats is not a smart idea. This isn't a tree hugging issue, it's a very serious enviro issue.

And unless you are running some serious horsepower, cats don't restrict enough to be removed. WRXs....you aren't holding back any power unless you are in upwards of 450 hp.

Removing one of the cats on the WRX...thats one thing. Pulling them all for 3 hp......really f***ing stupid.
 

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I second that motion.

People who take out all cats, are noisy as hell, and pollute for an everyday driver don't impress me much.

Likely they will eventually get pulled over for noise, speeding, or something else. When they do they may get caught, fined, impounded, etc.

If more and more (insert word of your choice here) people do this then eventually there will be stricter enforcement and it is quite possible simple aftermarket emission modifications may come under further scrutiny. Simple question: are polution issues getting more stringent or lax? I guess those () peolple are looking for harsher penalties for all of us.

Plus the tree hugging issue - I have kids and sometimes think about the future and not just now.
 

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What about all the older pre-(some year) that don't have to worry about cats or all the trucks I see belching out thick black smoke. I think that is more of a serious issue than a few people that remove the cats on their cars. I am not going to defend them and I do however agree with you about a daily driver, even though I said it, I highly doubt I would remove them on my STi, especially all of them. Now on my Supra I don't drive it everyday. Just about everyone I know that owns a Supra and modified it, the first thing they did was get a downpipe. I thought about this issue also considering most of them drive it everyday. Kind a adds up after a while. Removing the cats on my Supra definitely made a huge difference in power. Maybe it doesn't on a WRX but a Supra it does. I even heard of some people in other states, don't know how or where, still passed emissions without a cat. Don't know if it's true but that's what I heard.
 

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Dont scare me, Manhatten is NYC to me..
Sunoco Ultra 94 in NJ for me.. :)

CloNeGTS said:
I've seen 92 pretty frequently in KC, but I'm sure you can find 93 somewhere.

I'm pretty new to the KC area, so I'll have to scout it out. There's nothing over 91 in Manhattan, that's for sure.
 

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Discussion Starter #15
Yes, that does help which means we should need to remove any cats.

About older cars....it's in the Constitution that you cannot make a law after the fact.

Does that give people the right to ignore a law after it has been created....I think you know the answer.

And as for people who use them once in a while.....you don't think race tracks and race teams don't pay a price to run those cars and events?

Regardless, people enjoying 3 hp gains while shorten our lives with the poisons....selfish and foolish.
 

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Listen I don't want to start an argument here but since you keep replying with the 3hp gains, I can tell you most forced induction vehicles will see a lot more than 3hp by removing the cat. Unless you are talking about a carolla or some other 100 hp vehicle. I am not saying it's right but just don't throw general 3hp gain statements out there to back up your statement about poisoning people for 3hp. Anyone that modifies a turbo or supercharged car, the first thing most do is get a high flow cat or get rid of their cats altogether. Now on a NA engine yeah, you might have to be up in the few hundred hp range to benefit but not on most turbo or supercharged vehicles.
 

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Discussion Starter #17
Naw, I didn't mean to start an argument either, and I did have an article to back up my statements, but I can't find it. It was a very well written article by a turbo manufacturer that stated that overall exhaust design is important and that the catalytic converter is becoming less and less of an issue these days.

From memory, he used a power threshold of around 450 hp. He claimed that a high flowing cat will give some nice gains, but that the 'very slight' gains made up until that threshold makes the labor of the removal not worth it.

No need to start a fight.....I just like to see when people take tuning seriously, but don't go and do things just because it seems to make sense.

The WRX guys at least seem to say that the first cat is a huge deal...but after that, don't bother.
 

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MKIVSupra said:
Hey, I thought you live In Illinois? Unless your vehicles are registered somewhere else. My Supra is catless. Simple bolt on and off when the time comes. I also don't drive my Supra everyday. If the STi is easily "fixable" when the time comes then something might happen to the cats. :wink:
Hey i do live in illinois. You live in the chicagoland area right? I had all my work on my Type R done by a shop in Arlington heights. And from what i understand all those guys who lived there had to get emissions testing done. They switched their stuff out just like you when it came time to do em. Now me who lives 65 miles away, I have never had to emissions test any of my cars. I know my grandma who lives in elgin has had to have her cars tested too. All i can tell you is i have never had to test my cars in the city i live in. O.k. as for the horsepower issue...my R with a random technologies cat made 9 less wheel hp than the car with the hollowed out JDM cat. Considering how hard and expensive it is to make power on an NA car i deemed it worth the 9hp. My daily driven car was an Accord and now its and S2000, so at least im not completely F****ng stupid i guess. And yes my R was insanely loud...but it came nowhere to the loudness of "legal" harley hillbilly bikes or white trash in their hopped up Muscle Cars.
 

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Hey lay off the Harley's man! :lol: I like those! You can't beat the feeling of cruising around in your own biker gang on a sunday morning and waking everyone up with your mean, loud, blaring Harley! :D
 

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I was calling around looking to but a preorder in and one of the sales reps at (ed voiles) my dealer told me that the 300 hp's were not actual. He said that the hp is closer to 360. Now i am by no mean am saying that this is true just tell you guys what I was told. He said the they hay to say 300 hp for insurance reasons. Oh, by the way he then told me that the STI is selling for 5000 over msrp if you preorder and 10000 if you walk in the door. So I dont know. But if is true I will be a happy man.
 
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