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Old 10-11-2005, 02:07 AM   #76
poison
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No, I'm in the TS.
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Old 10-11-2005, 10:17 AM   #77
Jitenshakun
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If you're in a TS with stock struts they you defenitely don't want the springs designed for the STi struts, unless you want your struts to explode.

-J
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Old 10-11-2005, 10:55 AM   #78
poison
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Heh, I LUV bobble!

no, I got STi struts too.






FYI, TS struts are the same as WRX struts. Same part #.

Last edited by poison; 10-11-2005 at 11:32 AM.
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Old 10-11-2005, 01:41 PM   #79
Dan@Prodrive.com
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I would like to chime in here to clear up some confusion (misinformation) regarding the Prodrive springs.

The two springs you are speaking of:
>MY04 STi - US4/D5/001
>MY05 STi - SO5/D5/001

There was no revision… We had designed a set for the 04 STi which remains the same to this date. In 05 Subaru had changed the geometry and spec of the STi significantly which required a new set to be engineered.


Linear or Progressive???
02-03 WRX - Linear
04-05 WRX – Progressive (2way)
04 STi – Progressive (3way)
05 STi – Progressive (3way)

Both of our STi spring kits are progressive. In fact they are 3way progressive… the first two progressions are there to filter out small to medium road noise (bumps, uneven pavement, etc...) Once you begin to really use the vehicle you will easily reach the third progression which is where you will spend most of your time.

Bumpstops…
The factory STi tends to run on the bumpstops quite a bit. The factory one is not very forgiving, therefore giving you a very stiff ride and feel. Our bumpstop has more progression, which in turn gives you a much smoother ride.


Our philosophy on springs…
Prodrive manufactures road-car springs not race-car springs. Our springs are designed to make a vehicle perform better on the road while keeping a comfortable ride (Reduced pitch, squat, MVH, etc.). Yes, your vehicle will perform much better on the track but it is not the optimal solution (coilovers would be your best bet).


Kind Regards
Dan Antonielli
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Old 10-11-2005, 02:49 PM   #80
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I'm gold!
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Old 10-11-2005, 11:48 PM   #81
B18flip
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so dan, whats the diff between the 05 sti and 04 sti springs?
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Old 11-20-2005, 04:44 PM   #82
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Not to dredge up the past (well, okay, never mind that) but I just installed Prodrive red '05 springs on my STi, along with Group N tops. The springs transform the car from a jiggly hot rod into a comptent, well mannered, highly controlled and controllable road machine. And that's exactly what I was looking for. I am very, very happy with these springs.

Last edited by francophile; 11-20-2005 at 04:55 PM.
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Old 11-20-2005, 08:02 PM   #83
Jitenshakun
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see below

-J

Last edited by Jitenshakun; 11-23-2005 at 05:25 PM.
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Old 11-23-2005, 05:24 PM   #84
Jitenshakun
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Question

Quote:
Originally Posted by Dan@Prodrive.com
I would like to chime in here to clear up some confusion (misinformation) regarding the Prodrive springs.

The two springs you are speaking of:
>MY04 STi - US4/D5/001
>MY05 STi - SO5/D5/001

There was no revision… We had designed a set for the 04 STi which remains the same to this date. In 05 Subaru had changed the geometry and spec of the STi significantly which required a new set to be engineered.

Dan Antonielli
I am no REALLY confused . Hot-Subaru.com showed 04/05 STi springs and 06 STi springs, while I thought 04 STi and 05 STi springs were clearly different. When I asked how to get the S05/DS/001 springs here's what I got back

Quote:
Originally Posted by Hot Subaru

Got the straight poop from Chris Fleming.

The ones we show as for 06 are going to be stiffer than the OEM springs but
retain the same or similar ride height.

The ones we show as for 04 are going to set the car lower than the OEM
springs but retain the same or similar stiffness.

Both kinds will fit your car. Make sense?
-J
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Old 11-23-2005, 05:46 PM   #85
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Well, perhaps you should try a vendor that knows what they are talking about?!
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Old 11-23-2005, 06:09 PM   #86
Jitenshakun
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Quote:
Originally Posted by Arnie
Well, perhaps you should try a vendor that knows what they are talking about?!
Very helpful.

-J
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Old 11-23-2005, 06:19 PM   #87
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c'mon, its simple. Prodrive posted up above the correct specs for the MY springs available. The above vendor's post doesn't even acknowledge that there is a difference between 04 and 05 STi springs = vendor doesn't know doodoo. Go to a vendor that know's what they are talking about like RacecompEngineering.
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Old 11-23-2005, 11:28 PM   #88
Jitenshakun
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Even more confusing. Hot Subaru had this to say

Quote:
Originally Posted by hot subaru
Yeah, confusing, eh?

Basically Chris AND Dan are right. Chris's point is that, in our opinion, the 05 STi suspension actually did NOT receive a significant revision over the 04.

It also gets confusing with Prodrive sometimes because they often use EDM MYs instead of USDM. Maddening.

Anyway, Chris stands by his claim that both springs will work.
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Old 11-23-2005, 11:43 PM   #89
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No one is debating the fact that they won't work. You can put 05 springs on an 04 car and vice versa.

There are differences between the 04 and 05 STi's struts, one major one being less bump travel in the 05 STi. If that isn't a significant difference then I don't know what is. Prodrive is detail oriented enough to have noted this difference and made according changes to their 05 STi spring set. If you want what is optimized for your strut then pick the appropriate year spring for your car or strut set. If the vendor doesn't give a crap about that difference, once again, I suggest going to a different vendor who is in tune to the fine details of chassis setup.
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Old 11-24-2005, 09:02 PM   #90
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Myles, do you have pictures of new progressive Prodrives on a car?
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Old 11-27-2005, 10:18 AM   #91
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Quote:
Originally Posted by silver arrow
Myles, do you have pictures of new progressive Prodrives on a car?
I have some pictures of '05 Prodrive springs on an '05 STi .
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Old 11-27-2005, 06:53 PM   #92
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I was looking for picture of Prodrives or the Pinks on a 2002 Wrx sedan . . anyone ?
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Old 11-28-2005, 02:26 AM   #93
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Quote:
Originally Posted by ALaDDiN
I was looking for picture of Prodrives or the Pinks on a 2002 Wrx sedan . . anyone ?
Do a search. They've been posted numerous times.
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Old 11-28-2005, 03:55 AM   #94
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Myles,

From your experience you seem to have a preference of the "new" Prodrive springs. This would seem to indicate either you simply prefer the 2005 STi suspension with 2005 Prodrives or you have tried the 2005 Prodrives on the 2004 STi suspension. I honestly can't figure out which you mean with what. I do appreciate Prodrive posting that their are differences between 2004 springs and 2005 springs for the STi.

Thanks,
Justin Wade
2004 FXTi
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Old 12-13-2005, 10:51 PM   #95
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Back from the dead again. Would the new Prodrive 05 STI springs (SO5/D5/001) work well on the 04 struts or what? Would they give less drop than the Prodrive 04 STI springs (US4/D5/001) Beuller?

Regards,
Justin Wade
2004 FXTi
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Old 12-14-2005, 12:27 AM   #96
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Quote:
Originally Posted by wadejg
Would the new Prodrive 05 STI springs (SO5/D5/001) work well on the 04 struts or what?
well, they would work, but probably not as well as the '04 springs. Why would you do it?

form what I have gathered:
05 springs on 05 = less drop than 04 springs on 05.
I would assume:
05 springs on 04 = less drop than 04 springs on 04.
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Old 12-14-2005, 02:34 AM   #97
wadejg
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Quote:
Originally Posted by austinpike
well, they would work, but probably not as well as the '04 springs. Why would you do it?

form what I have gathered:
05 springs on 05 = less drop than 04 springs on 05.
I would assume:
05 springs on 04 = less drop than 04 springs on 04.
I would do it if the 05 springs on 04 struts if the 05 springs have a bit higher spring rate and a bit less drop because I'm doing this on a Forester with STI suspension and I'm not looking for low.

Regards,
Justin Wade
2004 FXTi
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Old 01-29-2006, 01:35 PM   #98
Jitenshakun
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I just installed the S05/D5/001 spings on my stock struts. The only other suspension mods are a 22m rear swaybar and Whiteline endlinks (installed months before the spirngs).

I can confidently report that the ride is smoother. Man hole covers, pot holes, dips in the road all feel much smoother.

In relatively spirited cornering there is much less body role as well.

Ride height barely changed and the giant flange on my TXS Stealthback doesn't come close to rubbing on speed bumps or on the curb when I back out of my driveway.

The springs are exactly what I was looking for. &

-J
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Old 03-11-2006, 12:58 AM   #99
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Quote:
Originally Posted by Jitenshakun
I just installed the S05/D5/001 spings on my stock struts. The only other suspension mods are a 22m rear swaybar and Whiteline endlinks (installed months before the spirngs).

I can confidently report that the ride is smoother. Man hole covers, pot holes, dips in the road all feel much smoother.

In relatively spirited cornering there is much less body role as well.

Ride height barely changed and the giant flange on my TXS Stealthback doesn't come close to rubbing on speed bumps or on the curb when I back out of my driveway.

The springs are exactly what I was looking for. &

-J
Just placed an order thru Myles at:

http://www.racecompengineering.com

Ordered Part #RCE-PROSPRINGS Prodrive 2004-2005 STi Springs

I just emailed racecompengineering to make sure these are the "SO5/D5/001" Prodrive Part #, as I have an 05 STi. I'm not sure if he stocks that part # along with the 04 "US4/D5/001" part #, and how he knows which one to ship.

I'll post some feedback when I get them mounted! The goal was to make the STi a better daily driver (I'm getting old) and to reduce getting the cr*p shaken out of me during the highway miles I put on the car. Hopefully my experience will be similar to Jitenshakun's.

Last edited by Lang; 03-11-2006 at 01:03 AM.
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Old 03-13-2006, 11:21 AM   #100
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Myles,

How about MY06 STI's ???

I ordered the Cobb and am in the process of returning them (too aggressive of a drop 2.0 in the front 1.5 in the rear-wow what the hell was I thinking??).

Can you suggest anything else I would need to purchase along with the Prodrives Springs for my 06 STI?

Thanks,

STix66
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