US STi EJ25 & JDM STi EJ20
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boy, I know I'm just being negative here, but seems to me this post is just a lot of people who don't know what they're talking about (some do) who just keep repeating the SAME DAMN THING everyone else says. Please, if you don't have something NEW and intelligent to say, just don't even post. It wastes my time trying to read all of the posts that say the same thing...
-Thank you.
-Thank you.
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i am mad bout the fact that i wanted to put a jdm top fuel turbo kits in my sti and when it comes to import cars in the u.s. power is limited unless with the use of nos which i hate cuz its cheap power and riced out, now in japan power of import is unlimited you can find imports over there with 1000 hp+ anywhere, but not here, and that is with out the use of nos
i am mad bout the fact that i wanted to put a jdm top fuel turbo kits in my sti and when it comes to import cars in the u.s. power is limited unless with the use of nos which i hate cuz its cheap power and riced out, now in japan power of import is unlimited you can find imports over there with 1000 hp+ anywhere, but not here, and that is with out the use of nos
Impeza:
you have no right to say NOS is rice, cause your whole comment is ricer than anything.
go read some post or books before making fun of yourself.
Originally posted by i-WRX
who cares about jdm...its not always the best...would you rather have a us spec supra tt or a jdm spec supra tt??? jdm is not always better or more powerful...
who cares about jdm...its not always the best...would you rather have a us spec supra tt or a jdm spec supra tt??? jdm is not always better or more powerful...
japan domestic cars will always be better, you know why, because they have better gas, however, it's way more expensive to even own a car there, as much as it is to pay for gas. it's not the car that is restricting, it's the crappy gas and crappy laws in the US that make it hard for us to get the good stuff. but as for the cars, they are quite better. take the IS300 for example, in japan, it's turbo'd, that's much better than the NA we get. they want to keep the good stuff for themselves, it's only the smart thing to do in terms of business. in fact, some of the top tuning companies are all based in japan, so why make a car that's crappy and run tests on it, when they can make some of the best and push it to it's limits. also, us americans don't race like they do in japan. we're so interested in just going straight, all that quarter mile talk. hell, in japan, they're into top speed. makes you wonder why we don't get the good stuff.
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OK here's the reality, umm I've never heard this whole crappy gas thing til now. And I've been around racing ALOT! Gas is gas, Octaine is Octaine. ( can't spell) The Japanese have more powerful cars because the japanese want more powerful cars than americans. You know why? To be like americans who want more powerful cars... that's all. Soon we will have more powerful cars than they could dream about and we'll be happy. It'll be like the old days. So anyways, that's about it. Besides, all the best drag racers either use ethanol or nitrous....ummm it's a necessity. (can't spell, all the beer might have something to to with it. )
Registered User
Joined: Apr 2003
Posts: 1,013
From: california, LOS ANGELES
Car Info: dream car Subaru STi
true the jdm cars are always better because we are getting the jdm from japan and it always gets filtered out down here.. the 2.5L sti is still jdm as can be, its manufactured by japan but for the use of the USDM, so in a way it is still the jdm quality that u want. so be happy with the 2.5L because its still made for the usdm by jdm. they kept the 2.0L sti for themselvesbecause they have other ways of efficiently making it faster and keepin the 2.0L tradition and following the rallying rules. the 2.5 is also another way of even making the STi with more potential than the 2.0L sti but the 2.5L sti cant be in rally races because it doesnt qualify anthing above 2.0L. but the 2.5L sti has a great advantage and that is that it has the genes of the same jdm beast but it is just waiting to be unleashed hungrier than ever with 2.5L
Registered User
Joined: Apr 2003
Posts: 1,013
From: california, LOS ANGELES
Car Info: dream car Subaru STi
just like the evo7 is faster than the ev08, just as the *** integ type R is faster than the usdm integ type R. just as the jdm 240 is faster than the usdm 240. jus as the jdm civic type R is faster than the usdm civic si. just as the jdm wrx is faster than the udsm wrx.
Originally posted by mprezuhguy
OK here's the reality, umm I've never heard this whole crappy gas thing til now. And I've been around racing ALOT! Gas is gas, Octaine is Octaine. ( can't spell) The Japanese have more powerful cars because the japanese want more powerful cars than americans. You know why? To be like americans who want more powerful cars... that's all. Soon we will have more powerful cars than they could dream about and we'll be happy. It'll be like the old days. So anyways, that's about it. Besides, all the best drag racers either use ethanol or nitrous....ummm it's a necessity. (can't spell, all the beer might have something to to with it. )
OK here's the reality, umm I've never heard this whole crappy gas thing til now. And I've been around racing ALOT! Gas is gas, Octaine is Octaine. ( can't spell) The Japanese have more powerful cars because the japanese want more powerful cars than americans. You know why? To be like americans who want more powerful cars... that's all. Soon we will have more powerful cars than they could dream about and we'll be happy. It'll be like the old days. So anyways, that's about it. Besides, all the best drag racers either use ethanol or nitrous....ummm it's a necessity. (can't spell, all the beer might have something to to with it. )
Originally posted by downshift
true the jdm cars are always better because we are getting the jdm from japan and it always gets filtered out down here.. the 2.5L sti is still jdm as can be, its manufactured by japan but for the use of the USDM, so in a way it is still the jdm quality that u want. so be happy with the 2.5L because its still made for the usdm by jdm. they kept the 2.0L sti for themselvesbecause they have other ways of efficiently making it faster and keepin the 2.0L tradition and following the rallying rules. the 2.5 is also another way of even making the STi with more potential than the 2.0L sti but the 2.5L sti cant be in rally races because it doesnt qualify anthing above 2.0L. but the 2.5L sti has a great advantage and that is that it has the genes of the same jdm beast but it is just waiting to be unleashed hungrier than ever with 2.5L
true the jdm cars are always better because we are getting the jdm from japan and it always gets filtered out down here.. the 2.5L sti is still jdm as can be, its manufactured by japan but for the use of the USDM, so in a way it is still the jdm quality that u want. so be happy with the 2.5L because its still made for the usdm by jdm. they kept the 2.0L sti for themselvesbecause they have other ways of efficiently making it faster and keepin the 2.0L tradition and following the rallying rules. the 2.5 is also another way of even making the STi with more potential than the 2.0L sti but the 2.5L sti cant be in rally races because it doesnt qualify anthing above 2.0L. but the 2.5L sti has a great advantage and that is that it has the genes of the same jdm beast but it is just waiting to be unleashed hungrier than ever with 2.5L
however, i heard from AZscoobie, which stated that the pistons aren't forged in the US STi, they are in the Japan one. he stated that the pistons are hypercast pistons. in terms of power, it seems pretty impressive that they can squeeze 320 hp just on the 2.0 alone, whereas the 2.5, they can only squeeze out 300. i would think they would be able to squeeze out more. i think the older STi's were pumping out more horsepower than the US STi and that was a couple years back.
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This thread goes on and on, until the same wrongheaded (and whiney) ideas are repeated, and the fundamental facts are again ignored.
There is no option available for producing 300 hp out of a 2 liter engine in a street legal US car. Mitsubishi can't do it, Subaru can't do it, and no one else can either. The reasons are technical and relate specifically to inavailability of high octane gas in places such as California, and increasingly extreme emissions standards here in the the US. Such engines brought to the US would have to be detuned. That is why the Evo engine makes 271 hp in the US and an estimated 310 hp in Japan. This is neither complicated nor hard to understand.
There is no option available for producing 300 hp out of a 2 liter engine in a street legal US car. Mitsubishi can't do it, Subaru can't do it, and no one else can either. The reasons are technical and relate specifically to inavailability of high octane gas in places such as California, and increasingly extreme emissions standards here in the the US. Such engines brought to the US would have to be detuned. That is why the Evo engine makes 271 hp in the US and an estimated 310 hp in Japan. This is neither complicated nor hard to understand.
the detuning is not in the engine itself, but within the ECU which is why it's not as aggressive. the ECU is programmed with two things in mind, emissions and low-octane gas. i don't think that the engine is touched, if you're bringing out the technical detail. and true, it isn't very hard to understand. if you look at the engine specs of the JDM evolution and the US evolution, you'd see that their engines are similar, hollow camshafts, 16G turbo, etc.
Last edited by clamdip; Jun 8, 2003 at 12:24 PM.


