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Old 04-11-2008, 10:55 AM   #176
karl750
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You just sold me on 400whp
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Old 04-11-2008, 11:58 AM   #177
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I think this should be stickied.
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Old 04-11-2008, 12:18 PM   #178
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^ +1 Sticky!!!!
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Old 04-11-2008, 12:21 PM   #179
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what if I want 575 hp??
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Old 04-14-2008, 06:17 PM   #180
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Originally Posted by hella_sti View Post
what if I want 575 hp??
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Old 04-14-2008, 06:41 PM   #181
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"i W4nT mi rEx to hav 1000hp d3wd so i canz race nick howgan in his sikk supra bro"
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Old 04-15-2008, 12:29 AM   #182
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Quote:
Originally Posted by Defiant Autospeed View Post
You were asking about 300-350whp and vf39 vs 18G.

I can tell you 100% without a doubt that you want the 18G. The VF39 is simply too small for the 2.5L motor. You would have the same sort of problem with a 16G as well.

Basically you know that WHAM of power then bleh that the subbies tend to have? The burst that makes it tough to drive them smoothly (helps on a date or with wife in car if you can drive it smoothly easier). Well that is due to the turbo surging caused by it being physically too small.
This is why you want at least an 18G. But not just any 18G. You likely want fast spool as thats what most people not shooting for big hp numbers want, and you likely want more top end as well. SO, you want a TD05-18G 8cm. The TD05 hot side will spool and respond a good bit faster than the TD06 would, and honestly, faster than the even smaller P18 hot side on the VF39. The reason for this is that IHI turbos are a very inefficient (sp?) design both in the housings and wheel design.

In addition to the TD05 hot side wheel, the 8cm hot side housing keeps creep away, and lets the motor breath a good bit easier, this does NOT affect spool, if anything since it allows the wheel to work more efficiently, it would help low end power. It also brings a good chunk of TQ with it, and its TQ over the entire powerband. Then moving on to the cold side, you want to make sure you get an 18G that has the properly sized compressor housing. Some manufacturers are using the small compressor housing in order to save money and sell cheaper turbos. This is a bad move at best when it comes to performance, as its simply physically too small to allow the 18G compressor wheel to function at its full efficiency. Bottom line is it does not, and can not perform the same.
.

While an 18G easily outperforms a VF-39, i'd seriously consider the new VF-48 as well if someone is looking to get within the power range of an 18G. Here is the setup I am definitely looking towards as my car is a daily driver; with my main concerns being safety, reliability, and even distribution of power throughout the RPMs:

http://forums.nasioc.com/forums/show...highlight=VF48

The red is a baseline pull off a Saab 92-X (aka MY06-07 WRX), and the blue is with the VF-48. Notice, that the lag is hardly noticeable (less than ~500rpm difference than stock) and peak torque comes in even quicker than the baseline pull. The area under the curve clearly makes the drive very smooth and even, but pulling all the way to the redline that was extended from 6500 to 7000 rpm. Not to mention that the VF-48 can be considered an "OEM" part as it comes from the 08 STI. Just putting out another idea
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Old 04-15-2008, 03:44 PM   #183
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Quote:
Originally Posted by itskrees View Post
While an 18G easily outperforms a VF-39, i'd seriously consider the new VF-48 as well if someone is looking to get within the power range of an 18G. Here is the setup I am definitely looking towards as my car is a daily driver; with my main concerns being safety, reliability, and even distribution of power throughout the RPMs:

http://forums.nasioc.com/forums/show...highlight=VF48

The red is a baseline pull off a Saab 92-X (aka MY06-07 WRX), and the blue is with the VF-48. Notice, that the lag is hardly noticeable (less than ~500rpm difference than stock) and peak torque comes in even quicker than the baseline pull. The area under the curve clearly makes the drive very smooth and even, but pulling all the way to the redline that was extended from 6500 to 7000 rpm. Not to mention that the VF-48 can be considered an "OEM" part as it comes from the 08 STI. Just putting out another idea
The VF48 doesnt perform anywhere near that of a TD05-18G 8cm. The 18G is a 600CFM turbo, with a FAR more efficient and larger hot side.

The power increase isnt coming from the turbo (not all of it) there are a LOT of things that are different on the 08 motor, just as there was on the 07 motor when compared to the 06 and earlier. When the 07s first came out everyone thought the VF43 was a lot bigger than it was, then we figured out it was the motor itself making more, no the turbo.
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Old 04-15-2008, 10:04 PM   #184
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Sticky Pls
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Old 04-16-2008, 03:12 PM   #185
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Hey thankx for this post !!! I now have 400 WHP !!!

Oh yea. You forgot to add a couple of things.

I am 16 and a half , I put all my money on the car every single dollar and ... well really my parents money .. my every day work money, money i should be saving for the future, etc etc.. and now I have 400 WHP. and now I have a great amazing car ... I followed your instructions above , thank you very much...

thank you , but screw you !!!

Well , since I did this, My gas tank last me 2 days. so now I can not aford the every day expence that these upgrades are still costing me . Because the Turbo may have cost me a ONE TIME FEE of 2000 dollars, But that is not all the story, The turbo is actually costing me more, EVERY time i step on the gas , it cost me a dollar, and that was not taken in to consideration... Oh and the tires, arent they suposed to last more than 2 months, now I got 4 bald tires and I can not afford to change them because i got the pimp 18" rims and they are expensive. I drove the car the other day and just a blip of the gas pedal and I almost hit some one who could not imagine i was going to be next to them that quickly, oh , and another blip of the pedal and now i have 10 speeding tickets .

So yea , thank you once again, I got a monster of a car, but I can not pay for the every day things that are multiplied exponentialy by having such a powerful car.
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Old 04-16-2008, 05:40 PM   #186
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Quote:
Originally Posted by 112nick View Post
Please remember that modifying a Subaru is expensive compared to what you were doing to your Honda or domestic v8.

*Just a general statement.*
Yeah, wasn't that a shock.

I came from an 04' Mustang GT. Most of you hate mustangs or have a general dislike towards them, just as most mustang owners hate anything with a 4 cylinder in it and wings and JDMZZZZZZ and engine names with numbers. I was weird and grew up loving the mustangs and wrxs, then STi's when they came out (funny too cause im half white half asian). Fortunately the STi is in a different class of 4 cylinder modifying since it is actually a performance car. I still can't stand most other 4 cylinder 'modding' I see on the streets since 98% of it is pure ricerism.

To the point, my crappy ass 2 valve (vs the 4 valve or basically any other production V8 'sports' car) 4.6L V8 would put down 375-400 to the wheels for about $4000 or less. 375 is at 10 psi (ten), with supporting mods (exhaust, etc) in the 400's. That's it, you don't NEED anything else, because that includes fuel pump, 8 injectors, tuner just like the cobb AP2 with the tune for this specific application already on it (no need for dyno tuning but you can still benefit from it), new MAF, and even spark plugs (this particular kit is $3900). $4000 is a lot of money and it always will be but compare it to a stock turbocharged (vs n/a motors not designed to be boosted) STi and get to 400 whp and you'll be spending way more.

That was kind of upsetting (along with a lot of price gouging even with supply and demand) but the STi is better in every other single way to me so ill be alright .
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Old 04-19-2008, 02:32 PM   #187
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Quote:
Originally Posted by AbACUZ View Post
Hey thankx for this post !!! I now have 400 WHP !!!

Oh yea. You forgot to add a couple of things.

I am 16 and a half , I put all my money on the car every single dollar and ... well really my parents money .. my every day work money, money i should be saving for the future, etc etc.. and now I have 400 WHP. and now I have a great amazing car ... I followed your instructions above , thank you very much...

thank you , but screw you !!!

Well , since I did this, My gas tank last me 2 days. so now I can not aford the every day expence that these upgrades are still costing me . Because the Turbo may have cost me a ONE TIME FEE of 2000 dollars, But that is not all the story, The turbo is actually costing me more, EVERY time i step on the gas , it cost me a dollar, and that was not taken in to consideration... Oh and the tires, arent they suposed to last more than 2 months, now I got 4 bald tires and I can not afford to change them because i got the pimp 18" rims and they are expensive. I drove the car the other day and just a blip of the gas pedal and I almost hit some one who could not imagine i was going to be next to them that quickly, oh , and another blip of the pedal and now i have 10 speeding tickets .

So yea , thank you once again, I got a monster of a car, but I can not pay for the every day things that are multiplied exponentialy by having such a powerful car.

Let this post serve to point out exactly what I was saying I didnt forget to add any of that, I listed in detail what that kind of power brings with it.
No offense but the last few lines of your post prove 100% why a 16 year old should not have this much power. If you ALMOST hit someone, its very likely that you are GOING to hit someone or something. Hopefully the experience taught you a lesson and you will have a bit more respect for and understanding of the power. The key is knowing just how fast it can get you into a bad situation. I think you at least somewhat learned it there.


You saving for the $5000 PPG transmission yet? You better be. Oh and if you didnt do forged pistons, plan on needing a motor. Could be a year away, could be tomorrow. But it will happen. If you have a 92X, you have a 2.0L and its likely going to last a VERY short time if you didnt do pistons

Last edited by Defiant Autospeed; 04-19-2008 at 02:38 PM.
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Old 04-19-2008, 06:56 PM   #188
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finally a person that educated stupid people thinking the can run high horses and use it for daily driving.

you want a race car? buy a beater people so your not screwed when you break it, if you can drop that much money you can drop a grand for a decent beater.

My goal is beating the best quarter mile on stock turbo :-P wat is it 12.49 seconds now?
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Old 04-19-2008, 07:00 PM   #189
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If my buddy would get off his ass and get to the track he should hit 12.4 or damned close. If he would REALLY get off his ass and put his new motor in (its still a 2.0) he would break the record.

It should be noted that 9 out of 10 people with 400whp cant beat a 12.4
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Old 04-19-2008, 07:15 PM   #190
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"I want 90000WHP and $45 to spend. What do you recommend now, smart guy?"

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Old 04-19-2008, 07:17 PM   #191
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Quote:
Originally Posted by imma_stocker View Post
"I want 90000WHP and $45 to spend. What do you recommend now, smart guy?"

Buy a $45 tool to break into a shop with a dyno, or pay a dyno owner 45 to let you put it on the dyno.
put it on the dyno and play with the settings till it reads that.

Can dynos even read past 3-4k whp? I mean I know most cant read much beyond 1500 or so IIRC.
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Old 04-19-2008, 08:29 PM   #192
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That was an awesome write up. Very good advice
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Old 04-19-2008, 08:40 PM   #193
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Quote:
Originally Posted by GT4604 View Post
Yeah, wasn't that a shock.

I came from an 04' Mustang GT. Most of you hate mustangs or have a general dislike towards them, just as most mustang owners hate anything with a 4 cylinder in it and wings and JDMZZZZZZ and engine names with numbers. I was weird and grew up loving the mustangs and wrxs, then STi's when they came out (funny too cause im half white half asian). Fortunately the STi is in a different class of 4 cylinder modifying since it is actually a performance car. I still can't stand most other 4 cylinder 'modding' I see on the streets since 98% of it is pure ricerism.

To the point, my crappy ass 2 valve (vs the 4 valve or basically any other production V8 'sports' car) 4.6L V8 would put down 375-400 to the wheels for about $4000 or less. 375 is at 10 psi (ten), with supporting mods (exhaust, etc) in the 400's. That's it, you don't NEED anything else, because that includes fuel pump, 8 injectors, tuner just like the cobb AP2 with the tune for this specific application already on it (no need for dyno tuning but you can still benefit from it), new MAF, and even spark plugs (this particular kit is $3900). $4000 is a lot of money and it always will be but compare it to a stock turbocharged (vs n/a motors not designed to be boosted) STi and get to 400 whp and you'll be spending way more.

That was kind of upsetting (along with a lot of price gouging even with supply and demand) but the STi is better in every other single way to me so ill be alright .
Like my '06 GTO, cost me as much used with 11k miles as my WRX did with 8k miles. I spent all of about $1500 in mods, and $400 for a dyno tune, and bam - 385rwhp/387rwtq.

Now, trying to get there in the WRX? Definitely not a $1500 venture, but the WRX handles much better, gets at least 10 more mpg, and is just a blast to drive.
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Old 04-19-2008, 11:58 PM   #194
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Originally Posted by zer0psi View Post
Like my '06 GTO, cost me as much used with 11k miles as my WRX did with 8k miles. I spent all of about $1500 in mods, and $400 for a dyno tune, and bam - 385rwhp/387rwtq.

Now, trying to get there in the WRX? Definitely not a $1500 venture, but the WRX handles much better, gets at least 10 more mpg, and is just a blast to drive.

Can't do if for ~$2000...try the classifieds on here. If you don't have to have new parts, are willing to wait for a good deal and don't mind dealing with people over the net...n that includes the tune. Yep...it can be done.
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Old 04-20-2008, 12:16 AM   #195
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Quote:
Originally Posted by Davenow View Post
Buy a $45 tool to break into a shop with a dyno, or pay a dyno owner 45 to let you put it on the dyno.
put it on the dyno and play with the settings till it reads that.

Tool, check


Dyno, check

90000WHP here I come!
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Old 04-21-2008, 06:38 PM   #196
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I Just Found This Thread It Is Great! I Know Too Many People Tht "need 400 Whp"....threy Aren't Even Stage 2 Yet!!!! It's Awesome. Probably The Worst Engine Turbo Swap I Keep Hearin About Is 2.2 W/td06-20g!!! Great For A Drag Car, But A Street And Once In A While Time Attack? Garbage!
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Old 04-21-2008, 07:24 PM   #197
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Actually on a 2.2 that wouldnt be bad. As long as its a built 2.2 with corrected compression.

Its still enough power that you should be asking yourself "Do I REALLY know what this power level means, and the ups and downs it comes with?"
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Old 04-21-2008, 08:56 PM   #198
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Originally Posted by Davenow View Post
If my buddy would get off his ass and get to the track he should hit 12.4 or damned close. If he would REALLY get off his ass and put his new motor in (its still a 2.0) he would break the record.

It should be noted that 9 out of 10 people with 400whp cant beat a 12.4

i think the rule is stock drive train (engine and trans) also no internals or tranny swaps basically
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Old 04-23-2008, 01:55 PM   #199
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Originally Posted by crzyazzpolak717 View Post
i think the rule is stock drive train (engine and trans) also no internals or tranny swaps basically
Last I heard it was just no turbo upgrades, no race gas and no nitrous or cryo cooling.

I know that at least half the top 10 have built SOMETHING in their car.
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Old 04-23-2008, 02:07 PM   #200
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Great thread man. Like drinking, I think people should upgrade with moderation. I found that my Stage 2 WRX was all the power I really needed.
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