Thứ Ba, 22 tháng 11, 2016

Changes to 07 STI - good or bad? part 1

AustinTX 09-08-2006 10:29 AM

Changes to 07 STI - good or bad?
I'm in the market for an STI, and it looks like they've changed quite a bit on the 07's. What do you think about the changes related to autocross/track? [url]http://forums.nasioc.com/forums/showthread.php?t=1081206[/url]

The WRX STI and WRX STI Limited now utilize solid rubber engine mounts
The Sodium filled exhaust valves have been deleted from the WRX STI and WRX STI Limited
The WRX STI and WRX STI Limited now have a revised cylinder head design to improve cooling

EMISSIONS
The WRX STI and WRX STI Limited now comply with the LEV 2 emissions rating
The WRX STI and WRX STI Limited now have a secondary air pump to improve emissions

TRANSMISSION
The WRX STI and WRX STI Limited now have new gear ratios in the 2nd, 3rd, and 4th gear for
improved fuel economy and drivability

AWD SYSTEM
The WRX STI and WRX STI Limited now utilize a TORSEN Limited Slip Rear Differential in the for enhanced performance

SUSPENSION: STI AND STI LIMITED
Front:
The high caster settings used in 2006 have been changed to normal caster settings for 2007
Rear:
The 20mm rear stabilizer bar for 2006 has been changed to a 19mm stabilizer bar for 2007

WHEELBASE:
The wheelbase of the WRX STI and WRX STI Limited is 99.4 due to the normal castor settings of the suspension
grippgoat 09-08-2006 11:17 AM

:huh:

The only things on that list that sound like they could really be improvements are the gear ratios, assuming they made 'em taller. I've always thought the USDM ones were a bit short.

EDIT: I guess the solid engine mounts would be good, too. I wonder if they're just the Group-N mounts, or something else? Also, the better cooling in the head is probably a bonus, but I wonder how much of a difference that makes. I wonder why they jacked around with the caster and rear swaybar.... I wonder if they're pooching the majority pavement people to give some kind of improvement to the minority (off-road). And I wonder what effect that Torsen rear has.

-Mike
rankink 09-08-2006 11:29 AM

Everything I found so far says on 3-4 gears have been changed and made taller, but nothing on 2nd. It still lists it as the same 2.375. Now, the extended 3rd & 4th gears the 1/4 milers will like because you would no longer need to shift to 5th at the end. If 2nd was lengthened it would be big for autocrossers due to having to shift to 3rd all the time.
aschen 09-08-2006 11:45 AM

a taller 2nd gear would be a godsend for stis :) . the rest of the stuff prolly' doesent matter much. Hopefully the weight isnt still growing
Uber Wagon 09-08-2006 12:14 PM

Looks to me like the '05 is still the winner....
AustinTX 09-08-2006 12:15 PM

The new one has a smog pump on it :(
amukaoen 09-08-2006 12:20 PM

getting worse and worse... =/

05 STi FTW!
rankink 09-08-2006 12:39 PM

Yeah, even though it is mentioned above the 2nd gear does not seem to be changed. The caster changes, smaller swaybar and additional pump are not welcome.
AndrewSS 09-08-2006 12:42 PM

ohh man, if only 2nd gear was taller, that would be a good change :)
rankink 09-08-2006 12:53 PM

[QUOTE=AndrewSS;15175071]ohh man, if only 2nd gear was taller, that would be a good change :)[/QUOTE]


Yes, but would do you and I with 05's no good. :) Unless you go to SP and swap in the new tranny
WRXedUSA 09-08-2006 12:58 PM

[QUOTE=Uber Wagon;15174610]Looks to me like the '05 is still the winner....[/QUOTE]
12345


I had a hunch, and it is only now proving true.
salisburyv 09-08-2006 12:59 PM

But 04 is the lightest...and 06 is the fastest out of the box....they all feel the same to me, well.....except mine is faster lol!!!
pio!pio! 09-08-2006 01:41 PM

less caster = boo..but cheaper though..cost cutting
even the base wrx goes from aluminum susp to steel...
nater 09-08-2006 01:47 PM

[QUOTE=pio!pio!;15175983]less caster = boo..but cheaper though..cost cutting
even the base wrx goes from aluminum susp to steel...[/QUOTE]

They took away the aluminum front arms in 07? wow... that is a bad move.

Also, overall, I would say that the 07 is a step down from an 06. Smaller rear bar, less caster, etc all dont add up to a performance increase...
KC 09-08-2006 01:53 PM

[QUOTE=nater;15176068]They took away the aluminum front arms in 07? wow... that is a bad move.
[/QUOTE]

So now The Strano Bar won't be that big a deal for the WRX!! :lol: (The STi still has the Aluminum) :)

--kC
skuttledude 09-08-2006 02:01 PM

I'm holding out for 08'

(which should hopefully act just like the P2 prodrive ubercar...pleeeease)

IMHO, looks like 05-06 is still the winner.
pio!pio! 09-08-2006 02:43 PM

[quote=nater;15176068]They took away the aluminum front arms in 07? wow... that is a bad move.
[/quote]


they did the same on the rear susp too
wm07 09-08-2006 03:49 PM

[QUOTE=Uber Wagon;15174610]Looks to me like the [b]'06[/b] is still the winner....[/QUOTE]

fixed it for you. :)
jamesohoh7 09-08-2006 05:04 PM

[QUOTE=KC;15176169]So now The Strano Bar won't be that big a deal for the WRX!! :lol: (The STi still has the Aluminum) :)

--kC[/QUOTE]

one would think!, but a buddy of mine had his steel control arms b0rk3d by the 'strain?-oh!' bar... he was able to weld it up himself though. Even with that issue, he loves the bar and raves about it. :)
STi-MAN 09-08-2006 05:19 PM

05 FTW.... So they took away the front aluminium control arm and the rear aluminium links???
pio!pio! 09-08-2006 05:48 PM

they did for the base WRX
555ideways 09-08-2006 05:52 PM

06 makes it around the track the quickest compared to the older models. that's the winner in my book.

fastest=bestest :banana:

-Paddy
Impreza01 09-08-2006 07:30 PM

Hrmm, the 2005 and 2006 WRX STIs are the fastest cars now. I wonder what the J-spec STIs get. Subaru is losing me as a customer for a STI and the Evo is looking better now.

OP: The downgrade in the engine list is the deleting of the sodium filled exhaust valves. The deletion of aluminum bits form the WRX suspension is a negative. The decrease in caster of the WRX STI is bad and the decrease in rear sway bar size is also bad.
narib2001 09-08-2006 07:35 PM

Glad i got the 06 instead of the 07...the changes although they hurt performance for 07...are not too big of a change.
lovesmysuby04 09-08-2006 07:50 PM

I read that 2nd gear for the 07 is taller and the ratio is not the same as the 06(2.375) but 2.235 instead.
wrxwhat 09-08-2006 08:22 PM

I wonder if the 07's will cross the traps in 5th like the previous models, that could make a big difference in 1/4 times stock
lovesmysuby04 09-08-2006 09:04 PM

117mph is supposed to be redline in 4th gear.
pio!pio! 09-08-2006 09:15 PM

well deletion of the sodium filled exhaust valves I don't think ti's that big a deal because at teh same time they redesigned the head for superior cooling. So they prolly didn't need to use the sodium valves anymore.

but maybe it wont be as moddable anymore
V6TurboTA 09-08-2006 09:21 PM

[QUOTE=lovesmysuby04;15181132]117mph is supposed to be redline in 4th gear.[/QUOTE]


And they left 5-6 alone?

So whats it about 117 in 4th and 125 in 5th? ;)

~v6
lovesmysuby04 09-08-2006 09:25 PM

[QUOTE=V6TurboTA;15181257]And they left 5-6 alone?

So whats it about 117 in 4th and 125 in 5th? ;)

~v6[/QUOTE]

Sorry, 137mph for 5th. ;)
Call_me_Tom 09-08-2006 09:31 PM

I would have been happier if they would have just given 6th a taller gear.
STi-MAN 09-08-2006 09:42 PM

[QUOTE=krazyK1371;15181324]I would have been happier if they would have just given 6th a taller gear.[/QUOTE]

Id be happier if it stayed sporty. if i wanted a good gas mileage car i would have got a prius.
lovesmysuby04 09-08-2006 09:44 PM

[QUOTE=STi-MAN;15181399]Id be happier if it stayed sporty. if i wanted a good gas mileage car i would have got a prius.[/QUOTE]:lol:
solo2wrx 09-08-2006 10:12 PM

My hope is they did lengthen 2nd gear. If they only lengthened 3rd and 4th that could be detrimental for autocross where you need to shift to 3rd all the time. If 3rd is longer you won't be able to hold it as long as you could with the old gearing which means more shifting when you slow down. I really liked the fact you could put it in 3rd and leave it there for most of our local courses.
Call_me_Tom 09-08-2006 10:21 PM

[QUOTE=STi-MAN;15181399]Id be happier if it stayed sporty. if i wanted a good gas mileage car i would have got a prius.[/QUOTE]
How sporty can you be on an autox or track in 6th?
Mykl 09-09-2006 01:37 AM

I won't be trading in my '04.5 for one.
BIGSKYWRX 09-09-2006 10:37 AM

This is really distrurbing. We should be waiting w/ baited breath on the new improvements to performance almost each MY has brought- instead this terrible news. Deleting aluminum bits off the WRX- shame on them. Deleting the spec C front arms on the STi- shame on them. Reducing the rear sway from 20 to 19mm-shame on them.

I really had hoped they would be moving FORWARD (hell we'd settle for status quo if necessary!) w/ both the STi and WRX in regards to performance- looks like they are headed in the other direction- I don't know who is at the helm of SOA, but he isn't getting it right.

Do they not visit the dozen or more Impreza enthusiast sites?

The Prius comment unfortunately is not too far off of the mark- so sad :(
rankink 09-09-2006 01:21 PM

[QUOTE=lovesmysuby04;15180562]I read that 2nd gear for the 07 is taller and the ratio is not the same as the 06(2.375) but 2.235 instead.[/QUOTE]


I could not find anywhere that confirmed the longer 2nd in the 07 is true. Even if it was 2.235 that is only a few MPH which then does not make as much of a difference as say hitting 64-65 in 2nd.
lovesmysuby04 09-09-2006 04:31 PM

It is supposed to hit 60 at redline in 2nd gear.
amukaoen 09-11-2006 12:02 PM

eh. more like 62 mph.
senortighto 09-11-2006 08:09 PM

i'm so glad i just bought my 06 STI yesterday :D

bought it just for the reasons on the changes, thought that the caster changes, and the changes to the transmission for better fuel economy(WTF!??!?!?!) were enough reason to get an 06 over an 07.

btw, STI's are soooooo badass!! i'm so happy with mine, thought i'd share :)
sb427f-car 09-11-2006 08:51 PM

[QUOTE=krazyK1371;15181324]I would have been happier if they would have just given 6th a taller gear.[/QUOTE]
Seriously...where do you ever use 6th? On the salts? Racing in a school zone? Hum, maybe cruising on the highway, there's a thought. :lol:
bdi 09-11-2006 08:54 PM

See below.
bdi 09-11-2006 08:56 PM

[QUOTE=senortighto;15208625]i'm so glad i just bought my 06 STI yesterday :D

bought it just for the reasons on the changes, thought that the caster changes, and the changes to the transmission for better fuel economy(WTF!??!?!?!) were enough reason to get an 06 over an 07.

btw, STI's are soooooo badass!! i'm so happy with mine, thought i'd share :)[/QUOTE]


I might be joining you. This is not the news i wanted to hear. I was hoping that the 07's would be just as good as the 06's....not worse. Subaru is starting to get soft like twinkie filling!!!:mad:
Call_me_Tom 09-11-2006 10:56 PM

[QUOTE=sb427f-car;15209209]Seriously...where do you ever use 6th? On the salts? Racing in a school zone? Hum, maybe cruising on the highway, there's a thought. :lol:[/QUOTE]
Do you read before you post? If so you would understand the stupidity of your post.
black06wagon 09-11-2006 11:03 PM

[QUOTE]The 20mm rear stabilizer bar for 2006 has been changed to a 19mm stabilizer bar for 2007
[/QUOTE]

woot more understeer!
afpdl 09-11-2006 11:25 PM

[QUOTE=sb427f-car;15209209]Seriously...where do you ever use 6th? On the salts? Racing in a school zone? Hum, maybe cruising on the highway, there's a thought. :lol:[/QUOTE]
I actually need 6th at the road courses around here. 5th runs out pretty fast. I would prefer 5 usuable gears and a 6th that is overdriven to hell though.
Call_me_Tom 09-11-2006 11:30 PM

[QUOTE=afpdl;15211240]I actually need 6th at the road courses around here. 5th runs out pretty fast. I would prefer 5 usuable gears and a 6th that is overdriven to hell though.[/QUOTE]
dido, my point exactly.

On most road courses you'll only need 5 gears. 6th being useful if your vehicle is a DD or you drive to the track.
senortighto 09-12-2006 02:39 AM

too bad subaru doesn't do a tranny like bmw M models, close ratio gears 1-5, and the 6th is overdriven to high hell, for that nice, low rpm, freeway cruising.
WJM 09-12-2006 06:17 AM

05 FTW. However, the 06 does drive nicely....I will wait to drive an 07 before I judge it.

Suppsidly, the 08....blah blah blah blah....
jamesohoh7 09-12-2006 08:08 AM

[QUOTE=afpdl;15211240]I actually need 6th at the road courses around here. 5th runs out pretty fast. I would prefer 5 usuable gears and a 6th that is overdriven to hell though.[/QUOTE]

+agreed ... 6th needs to be much taller for good freeway cruising, the rest of the box could be spread out a little as well so that 5th would be probably tall enough for road-course use.

They could do it the cheap way and just drop slightly taller gears in the diffs even. What's an STi got now?... 4.10? 3.90?.. I forget. Maybe go 3.73 ? .. does anyone make aftermarket ring + pinions for STis? Would changing that stuff screw up the various DCCD + related sensors? (yeah, speedo would need a recalibration, but I mean is there any serious issues doing a swap?)


[color=silver] guess I'm just rambling b/c I can't post in TXIC right now :-( [/color]
Call_me_Tom 09-12-2006 11:25 AM

[QUOTE=jamesohoh7;15213962]+agreed ... 6th needs to be much taller for good freeway cruising, the rest of the box could be spread out a little as well so that 5th would be probably tall enough for road-course use.

They could do it the cheap way and just drop slightly taller gears in the diffs even. What's an STi got now?... 4.10? 3.90?.. I forget. Maybe go 3.73 ? .. does anyone make aftermarket ring + pinions for STis? Would changing that stuff screw up the various DCCD + related sensors? (yeah, speedo would need a recalibration, but I mean is there any serious issues doing a swap?)


[color=silver] guess I'm just rambling b/c I can't post in TXIC right now :-( [/color][/QUOTE]
I'd do a search for PPG gears. From what I hear they are expensive but well worth the money.

The STI has the 3.90 final drive.
JoBoo 09-12-2006 11:33 AM

are you guys nutz?

the sti needs shorter 5th and 6th! theres a huge gap between 4th and 5th causing all sorts of hell with the synchros and shifting. The USDM is the only model not to get the JDM/EDM 5th/6th gears where all the gears are evenly spaced out.

Btw, 6th gear does get frequently used on the track. A shorter 6th would help pulling this areodynamic brick around the track a bit better at the upper end of things, even though it might run out of gear at some places. If I was in it for gas milage, well, the prius comment was appropriate.

Ok, now im gonna get flamed. 7 speed sequential FTW!
projectrally 09-17-2006 11:22 PM

Torsen rear diff is bigtime, though.
hanzo918 09-18-2006 12:10 AM

Plz explain torsen rear diff
Call_me_Tom 09-18-2006 12:53 AM

[QUOTE=JoBoo;15215996]are you guys nutz?

the sti needs shorter 5th and 6th! theres a huge gap between 4th and 5th causing all sorts of hell with the synchros and shifting. The USDM is the only model not to get the JDM/EDM 5th/6th gears where all the gears are evenly spaced out.

Btw, 6th gear does get frequently used on the track. A shorter 6th would help pulling this areodynamic brick around the track a bit better at the upper end of things, even though it might run out of gear at some places. If I was in it for gas milage, well, the prius comment was appropriate.

Ok, now im gonna get flamed. 7 speed sequential FTW![/QUOTE]
If I wanted a race car I'd buy one. The STI is a sports sedan and I've only managed to get the car into to 5th on the track.

Besides I've seen a few Prius's on the track!!!
makofoto 09-18-2006 02:04 AM

Torsen Dif ... go to the Transmission Forum and read the long FAQ on differentials ... many types.
AUTOwrXER 09-18-2006 03:53 PM

Torsen will not solve the rear differential issue with inside rear wheel lift. It will work better if you can keep all 4 wheels on the ground. If you use coilovers with little or no droop (i.e. Tein, JIC, etc.) you will still spin the inside rear wheel and eventually bust the rear diff.

Having a little more at rev limit is nice, but it's not enough to keep you from going to third. Whoever it was that said the taller 3rd gear will hurt is correct. I think the new gearset will only help in the "in-between" courses where you bounce rev limit instead of pulling third.
crazyboardr8806 09-18-2006 04:54 PM

w00t for 05 sti's!
ghostshadow 09-18-2006 05:04 PM

[QUOTE=rankink;15185257]I could not find anywhere that confirmed the longer 2nd in the 07 is true. Even if it was 2.235 that is only a few MPH which then does not make as much of a difference as say hitting 64-65 in 2nd.[/QUOTE]

the SOA rep brought an 07 to the Subaru Challenge this weekend. he said 2nd gear was noticably taller- by how much i don't know..

Không có nhận xét nào:

Đăng nhận xét