STI is undertuned ??
Thread Starter
Registered User
Joined: Dec 2002
Posts: 134
From: columbia,md
Car Info: 03 wrx,944 turbo racecar, Lexus is300
Re: Re: STI is undertuned ??
Originally posted by Elgorey
This is your only point that I would really argue with.
Subaru AVCS is an extremely basic implementation of VVT, and I seriously doubt it is worth anywhere close to 15hp.
In addition, according to some people, the AVCS is tuned for better throttle response and turbo spool
I agree that it is under-tuned, a 300/300 split means that there is plenty of room to grow in the top end. Not to mention those 3 damn cats again
This is your only point that I would really argue with.
Subaru AVCS is an extremely basic implementation of VVT, and I seriously doubt it is worth anywhere close to 15hp.
In addition, according to some people, the AVCS is tuned for better throttle response and turbo spool
I agree that it is under-tuned, a 300/300 split means that there is plenty of room to grow in the top end. Not to mention those 3 damn cats again
Remember a 2.5 rs falls on its face at around 5000 rpm and thats with 10.5.1 compression, now take away the 2.3.1 worth of compression and add vvt and a turbo big enough to complement a 2.5 liter.
How about this,..I'm not an engineer by a long shot, I can see where you're coming from and I do think the 15 hp is a bit much, maybe 10, maybe 5. This much I do know .When I was all hot into VW's ,.if you advanced the timing on a A-2 golf with cis fuel injection, Techtonics and the rest of the world,..dynoed it to be worth 5 hp above 5000 rpm. They then found by raising compression 2 points, to 12.1, you picked up another9 hp ,.at the wheels !! This is on a 110 hp 8v motor.
The vvt allows the timing to be sweet on the bottom and on the top.The engineers keep the overlap good on the cam and make the mid range strong and let the vvt do the rest of the work.
I wish I did know the real answer, but I do see your point.
thanks for responding, I started this post like weeks ago.
944 turbo guy( used to be G-60 jetta guy with 210 @ the wheels)
Guest
Posts: n/a
yeah I dont come around here very much 
very true, I guess it all depends on the implementation of the VVT. Agressive timing will yeild some good power no doubt.
oh , and I am definately excited as hell about the new STi. The only thing that worries me is putting such an expensive car on track! In retrospect I shouldnt have even done it with the WRX. Back when I started with the WRX I didnt think much about the possibility of a wreck, now that Im wiser
and I have seen too many of my friends ball up cars (not if...but when) I dont think its a very good idea to track an expensive car that isnt paid off. Which is why I just started building a showroom stock car. 
But it would be a crime to not take an STi on track to pass some vettes!
so how is that World challenge ride coming?
very true, I guess it all depends on the implementation of the VVT. Agressive timing will yeild some good power no doubt.
oh , and I am definately excited as hell about the new STi. The only thing that worries me is putting such an expensive car on track! In retrospect I shouldnt have even done it with the WRX. Back when I started with the WRX I didnt think much about the possibility of a wreck, now that Im wiser
and I have seen too many of my friends ball up cars (not if...but when) I dont think its a very good idea to track an expensive car that isnt paid off. Which is why I just started building a showroom stock car. But it would be a crime to not take an STi on track to pass some vettes!
so how is that World challenge ride coming?
Guest
Posts: n/a
Originally posted by ErnieT
but your incorrect about the FMIC and lag issue.
but your incorrect about the FMIC and lag issue.
FWIW, I plan on doing a FMIC swap into my RS at some point after my new engine goes in.
Jim
Thread Starter
Registered User
Joined: Dec 2002
Posts: 134
From: columbia,md
Car Info: 03 wrx,944 turbo racecar, Lexus is300
World challenge ride
No one wants to give up money for racing. When they do they want a Media package on the level of Nascar. So when you start talking to a person who has 5 successful ventures that generate like 20 million in revenues per year, and your asking for $ 12k per race ( 10 races a year) and looking for a 2 year commitment,..they start out excited and after thay talk to there accountant and board members, they dont shoot you down, they come back and say ,." yes we'll do it,....but,...only if you find someone to match us, because we'd like to do it for 4 years..."
Your sitting there thinking,..yeah fu--in' right,..you know that wont happen, if it did you'd change that later.
So my objective has changed and I will pay for 2-3 rides myself,..with along with buying an STI,..means I can barely run the Porsche in SCCA this year.
All oodles of noodles for me for the whole year. No 19 inch wheels for the STI (lol)
I have hired a company to search for sponsorship and they dont get paid unless they find money,...we'll see what happens....
thanks for asking though.
944 moneyless
Your sitting there thinking,..yeah fu--in' right,..you know that wont happen, if it did you'd change that later.
So my objective has changed and I will pay for 2-3 rides myself,..with along with buying an STI,..means I can barely run the Porsche in SCCA this year.
All oodles of noodles for me for the whole year. No 19 inch wheels for the STI (lol)
I have hired a company to search for sponsorship and they dont get paid unless they find money,...we'll see what happens....
thanks for asking though.
944 moneyless
Guest
Posts: n/a
Originally posted by Impreza Rider
Not a FMIC by itself. My point was a turbo having to pressurize and push air through 2 intercoolers (top and front).
Jim
Not a FMIC by itself. My point was a turbo having to pressurize and push air through 2 intercoolers (top and front).
Jim
I can't believe I have to tell you this, but when you go with a front mount intercooler, you take off the stock mount!!!
Guest
Posts: n/a
Originally posted by ErnieT
I know you arn't that ignorant to think the car would have two intercoolers? Good lord, I don't mean to be rude, but you make yourself sound 16yrs old with your post.
I can't believe I have to tell you this, but when you go with a front mount intercooler, you take off the stock mount!!!
I know you arn't that ignorant to think the car would have two intercoolers? Good lord, I don't mean to be rude, but you make yourself sound 16yrs old with your post.
I can't believe I have to tell you this, but when you go with a front mount intercooler, you take off the stock mount!!!
If you re-read the posts, you'd realize that I'm not the one that thought the car had 2 intercoolers. And, if you're going to criticize me, at least throw in some facts to shut me up
Anyway...what's wrong with having 2 intercoolers? Audi uses 2 on the TT, as does volvo on the S60R and S70R (IIRC). When did I ever say that I was going to leave a TMIC on my car when I went with a front mount. Again, if you re read I said that I'd be putting a FMIC on my car at some point. If you just thought about it for a second, and saw that I was making an arguement against having both intercoolers, you'd realize that I'd replace the top for the front.
I think that you need to read this thread again and figure out who you're talking to, because I think you're getting 2 people mixed together
Jim
Guest
Posts: n/a
Originally posted by Impreza Rider
Ernie-
If you re-read the posts, you'd realize that I'm not the one that thought the car had 2 intercoolers. And, if you're going to criticize me, at least throw in some facts to shut me up Anyway...what's wrong with having 2 intercoolers? Audi uses 2 on the TT, as does volvo on the S60R and S70R (IIRC).
Jim
Ernie-
If you re-read the posts, you'd realize that I'm not the one that thought the car had 2 intercoolers. And, if you're going to criticize me, at least throw in some facts to shut me up
Anyway...what's wrong with having 2 intercoolers? Audi uses 2 on the TT, as does volvo on the S60R and S70R (IIRC). Jim
Once again you show your ignorance and lack of knowledge of turbocharged cars. And the S60/S70R use a single turbo/ single intercooler. Sorry to burst your bubble. The Audi uses the 1.8T which also has only one intercooler. My wife has one and I know this for a fact. You can't and wouldn't run two intercoolers on a single turbo application.
Last edited by ErnieT; Feb 20, 2003 at 05:10 AM.
Guest
Posts: n/a
Ahem...
The 180hp one does, however (direct from the Audi website):
See for yourself: http://www.audiusa.com/features_spec...ode-1_,00.html
Now who's being ignorant?
The 180hp one does, however (direct from the Audi website):
225 hp
Turbocharged DOHC in-line 4-cylinder with direct ignition, two in-line charged air intercoolers, electronic turbo boost regulation, 5 valves per cylinder
Displacement: 1.8 liters (107 cu. in.)
Bore: 3.18 in.
Stroke: 3.40 in.
Compression ratio: 9.0:1
Horsepower (SAE net): 225 @ 5900 rpm
Torque: 207 lb/ft @ 2200-5500 rpm
Turbocharged DOHC in-line 4-cylinder with direct ignition, two in-line charged air intercoolers, electronic turbo boost regulation, 5 valves per cylinder
Displacement: 1.8 liters (107 cu. in.)
Bore: 3.18 in.
Stroke: 3.40 in.
Compression ratio: 9.0:1
Horsepower (SAE net): 225 @ 5900 rpm
Torque: 207 lb/ft @ 2200-5500 rpm
Now who's being ignorant?
Last edited by Impreza Rider; Feb 20, 2003 at 04:24 PM.
Guest
Posts: n/a
Originally posted by ErnieT
You can't and wouldn't run two intercoolers on a single turbo application.
You can't and wouldn't run two intercoolers on a single turbo application.
Mute point.
Last edited by Impreza Rider; Feb 20, 2003 at 10:09 PM.
Guest
Posts: n/a
Ok this is just sad....... Jim is one of the more knowledgeable people in the Mid-A.
ErineT get a clue, the more you call Jim ignorant the more of an *** you look like. You're acting like a 16 y/o who jumps to conclusions that some one doesn't know something, from seeing one comment. Keep on going through, this is gonna be fun to see Jim school you with out breaking a sweat.
Buster
Patiently waiting for the "your mom" comments
ErineT get a clue, the more you call Jim ignorant the more of an *** you look like. You're acting like a 16 y/o who jumps to conclusions that some one doesn't know something, from seeing one comment. Keep on going through, this is gonna be fun to see Jim school you with out breaking a sweat.
Buster
Patiently waiting for the "your mom" comments
Guest
Posts: n/a
Originally posted by EvasionOfTruth
Ok this is just sad....... Jim is one of the more knowledgeable people in the Mid-A.
ErineT get a clue, the more you call Jim ignorant the more of an *** you look like. You're acting like a 16 y/o who jumps to conclusions that some one doesn't know something, from seeing one comment. Keep on going through, this is gonna be fun to see Jim school you with out breaking a sweat.
Buster
Patiently waiting for the "your mom" comments
Ok this is just sad....... Jim is one of the more knowledgeable people in the Mid-A.
ErineT get a clue, the more you call Jim ignorant the more of an *** you look like. You're acting like a 16 y/o who jumps to conclusions that some one doesn't know something, from seeing one comment. Keep on going through, this is gonna be fun to see Jim school you with out breaking a sweat.
Buster
Patiently waiting for the "your mom" comments