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Community Main => General Automotive Topics => Topic started by: GrantC on December 09, 2010, 10:17:14 AM

Title: How to class your car for Auto-x (Specific Subaru Content inside)
Post by: GrantC on December 09, 2010, 10:17:14 AM
The possible classes for a Subaru are:
The way the rules work for Autox is that, "If it doesn't say you can, you can't".  If you have any questions feel free to ask, but the final answer is the rules, not my summary, so go read them yourself.

The full rules are here:
http://www.scca.com/assets/2013%20Solo%20Rules.pdf (http://www.scca.com/assets/2013%20Solo%20Rules.pdf)

Updated for 2014 rules, May 21, 2013.
Title: Re: How to class your car for Auto-x (Subaru Content inside)
Post by: GrantC on June 13, 2011, 09:23:54 AM
In Street you can do:

In Street-R you can do:
Everything allowed in Street with the following exceptions.

In Street Touring you can do:

In Street Prepared you can do:
In Street Modified you can do:

If you've removed carpet, removed door cards, done a carbon roof you're in X-prepared, 'cause I doubt you're running the required 46mm turbo inlet restrictor for F-prepared...

The full rules are here:
www.asncanada.com/2014-ASN-Solosport/ASN_Autoslalom_Regulations_2014_dh.pdf (http://www.asncanada.com/2014-ASN-Solosport/ASN_Autoslalom_Regulations_2014_dh.pdf)

Updated for 2014 rules,May 21, 2013.

My opinion of where each car is most competitive:
Title: Re: How to class your car for Auto-x (Subaru Content inside)
Post by: funk32 on June 13, 2011, 09:25:06 AM
Thank you very much! Very helpful
Title: Re: How to class your car for Auto-x (Subaru Content inside)
Post by: GrantC on June 13, 2011, 09:27:20 AM
neverLift did a nice thread on what to bring to an autox:
Auto-x Advice! (http://www.westernsubaruclub.com/smf/index.php?topic=2175)

And some good build threads (Some started as autox builds, some became autox builds, and some passed through being an autox build as one of their stages):
Jason R Morrow's 02WRX...No wing, More Group N, back to Stock Brakes (http://www.westernsubaruclub.com/smf/index.php?topic=10764.0)
snackers 08 money pit - wrexin' it up (http://www.westernsubaruclub.com/smf/index.php?topic=5541.0)
Project 2.5RS (http://www.westernsubaruclub.com/smf/index.php?topic=133.0)
CanehdianJ's grumpy old fart mobile: Soon with softer suspension (http://www.westernsubaruclub.com/smf/index.php?topic=9738.0)
piknockout's STU Autocross Build - 2006 STi sponsored by Agile Auto (NASIOC) (http://forums.nasioc.com/forums/showthread.php?t=1721023)
JW2's 2011 WRX: D-Stocker Rocker (NASIOC) (http://forums.nasioc.com/forums/showthread.php?t=2110705)
ESP-The 2002 WRX Project (NASIOC) (http://forums.nasioc.com/forums/showthread.php?t=1664698)
Karlton's 06 SGM STI - Full Race Custom Fender Flares! (IWSTI) (http://www.iwsti.com/forums/gd-members-journals/182281-karltons-06-sgm-sti-full-race-custom-fender-flares.html)
Jerkmobile - what is that you saaaaaay? (http://www.westernsubaruclub.com/smf/index.php?topic=20977.0)
Jutes Project STi (http://www.westernsubaruclub.com/smf/index.php?topic=14944.0)

NASIOC even has a subforum just for autocross, with stickies of people discussing their setups for all the above classes:
Autocross (http://forums.nasioc.com/forums/forumdisplay.php?f=188)
Title: Re: How to class your car for Auto-x (Subaru Content inside)
Post by: sti-tom on June 13, 2011, 11:12:21 AM
In street prepared you are also allowed to modify fuel injection (ie: injectors) and fuel pumps.
Wish I knew this when I went to Portland. I could have come back with an extra 50whp. There is always next year I guess  >:D
Title: Re: How to class your car for Auto-x (Subaru Content inside)
Post by: GrantC on June 13, 2011, 11:26:27 AM
In street prepared you are also allowed to modify fuel injection (ie: injectors) and fuel pumps.
Wish I knew this when I went to Portland. I could have come back with an extra 50whp. There is always next year I guess  >:D

Thanks!  Gonna make the volume of your car more "Griesbach friendly"?
Title: Re: How to class your car for Auto-x (Subaru Content inside)
Post by: Munky on June 13, 2011, 11:38:51 AM
What does removing the Secondary Air pump system do? SP, due to disabling all related codes to the system.
Title: Re: How to class your car for Auto-x (Subaru Content inside)
Post by: GrantC on June 13, 2011, 11:40:13 AM
What does removing the Secondary Air pump system do? SP, due to disabling all related codes to the system.

Yea, in SP you can remove emissions stuff.
Title: Re: How to class your car for Auto-x (Subaru Content inside)
Post by: Munky on June 13, 2011, 12:21:16 PM
Welp here i am SP with a "stock" car....grumble grumble grumble.  Oh well, the car was probably going to end up there anyways.
Title: Re: How to class your car for Auto-x (Subaru Content inside)
Post by: snackers on June 13, 2011, 12:29:54 PM
Welp here i am SP with a "stock" car....grumble grumble grumble.  Oh well, the car was probably going to end up there anyways.
Welcome to the Underprepped Cars Club!
We're glad to have you on board.
Title: Re: How to class your car for Auto-x (Subaru Content inside)
Post by: jer on June 13, 2011, 12:35:49 PM
Welp here i am SP with a "stock" car....grumble grumble grumble.  Oh well, the car was probably going to end up there anyways.

tell me about it.... :P
Title: Re: How to class your car for Auto-x (Subaru Content inside)
Post by: THE EDJ on June 13, 2011, 12:40:16 PM
Welcome to the Underprepped Cars Club!
We're glad to have you on board.

There's quite a few of us it seems!
Title: Re: How to class your car for Auto-x (Subaru Content inside)
Post by: canehdianJ on June 13, 2011, 12:46:51 PM
There's quite a few of us it seems!

In.

pretty much stock power levels, but a well prepped suspension...  just not coils :P

Bsp  ;D
Title: Re: How to class your car for Auto-x (Subaru Content inside)
Post by: Munky on June 13, 2011, 01:07:07 PM
tell me about it.... :P

That was your choice....I would have done the same.
Title: Re: How to class your car for Auto-x (Subaru Content inside)
Post by: LilDrunkenSmurf on June 13, 2011, 01:10:25 PM
SM =S
Title: Re: How to class your car for Auto-x (Subaru Content inside)
Post by: GrantC on June 13, 2011, 02:08:20 PM
Yes, if you've built your car w/o ever looking at this or another "auto-x prep" sticky or the rules then you'll be in a higher class than you feel you should be...

Oh well, that just means you can mod more without worrying about bumping up another class. >:D
Title: Re: How to class your car for Auto-x (Subaru Content inside)
Post by: Munky on June 13, 2011, 02:23:34 PM
Doesn't help that a penitential $200-600 useless part broke.
Title: Re: How to class your car for Auto-x (Subaru Content inside)
Post by: GrantC on June 13, 2011, 02:27:33 PM
Doesn't help that a penitential $200-600 useless part broke.

06/07 2.5L WRX -> ESP is the best place to play. ;)  (IMHO)
Title: Re: How to class your car for Auto-x (Subaru Content inside)
Post by: ultimatt on June 13, 2011, 02:30:54 PM
Doesn't help that a penitential $200-600 useless part broke.

http://en.wikipedia.org/wiki/Penitential ??

Did you mean potential?

Also, damn near everyone is under prepped, especially compared to US National level competitors.
It's not really a big deal, just don't hit cones and you'll usually beat snackers.

06/07 2.5L WRX -> ESP is the best place to play. ;)  (IMHO)
I'm inclined to agree.
Title: Re: How to class your car for Auto-x (Subaru Content inside)
Post by: GrantC on June 13, 2011, 02:59:26 PM
Additionally, you know that "AWD traction advantage" thing we love to talk/brag about?

If the club you're running with has their own "street tires in a non-ST class" classes, then you're much better off than 2wd guys. Just some food for thought.  >:D

PS.
ultimatt also points out that no-one currently seems to be running in ESP on street tires locally.  All the regulars have modded themselves past it either by "fixing things that broke" or "just because".  So you've got a "place to play".
Title: Re: How to class your car for Auto-x (Subaru Content inside)
Post by: Zac on June 13, 2011, 07:16:01 PM
not sure if this was covered but I didnt see it.

What are the definition for the classes acronyms?
Title: Re: How to class your car for Auto-x (Subaru Content inside)
Post by: GrantC on June 13, 2011, 07:30:08 PM
not sure if this was covered but I didnt see it.

What are the definition for the classes acronyms?

Re-edited, but it's a little busy looking now...
Title: Re: How to class your car for Auto-x (Subaru Content inside)
Post by: snackers on June 13, 2011, 07:31:47 PM
not sure if this was covered but I didnt see it.

What are the definition for the classes acronyms?

(x)S = Stock
ST(x) - Street Touring
(x)SP = Street Prepared
SM = Street Modified
(x)P = Prepared
(x)M = Modified (ie. not a street car)

I think that's all of them.
Substitute (x) for whichever class your car falls into. (A, B, C, D, E, F, G, H, S, X, U, R)

http://cms.scca.com/documents/Solo_Rules/solo_categories.pdf

Edit: Dunno why I even bother. Grant "The Rulebook" C always gets there first.
Title: Re: How to class your car for Auto-x (Subaru Content inside)
Post by: jer on June 13, 2011, 07:33:28 PM
Thought I'd help a bit too ;)

S = stock
ST = street tire *OR* street touring
SP = Street Prepared
SM = Street Modified
M = Modified
P = prepared


S, SP, M, and P have different "subclassing" that are designated by a preceeding letter

ex.
HS = H Stock
BSP = B Street Prepared
FP = F Prepared



edit: silly triple info!
Title: Re: How to class your car for Auto-x (Subaru Content inside)
Post by: GrantC on June 13, 2011, 07:34:30 PM
And I got mine from the appendix of the SCCA rules I linked to...

"Street Tire"  *pfft*  :o
Title: Re: How to class your car for Auto-x (Subaru Content inside)
Post by: funk32 on June 13, 2011, 07:35:54 PM
Yes, if you've built your car w/o ever looking at this or another "auto-x prep" sticky or the rules then you'll be in a higher class than you feel you should be...

Oh well, that just means you can mod more without worrying about bumping up another class. >:D

This is me lol, I built the car before even thinking about classes. But I love the car and I just need to learn to drive lol
Title: Re: How to class your car for Auto-x (Subaru Content inside)
Post by: GrantC on June 20, 2011, 08:24:28 AM
For Street Prepared:

Quote
P. Any metal clutch assembly, metal flywheel, or metal torque converter that uses the standard attachment to the crankshaft may be used. Non-metallic friction surfaces (e.g., clutch disks) are permitted. Dowel pins may be added. Any hydraulic clutch line may be used. Replacement or substitution of the clutch slave cylinder is permitted, but this does not allow non-original methods of clutch actuation (e.g. pull type versus push type).
(emphasis is mine)

So those OS Giken clutches are baller, but all their "movement alteration kit" bumps you straight to SM.  Which, depending on how much you feel it makes a difference, might be fair.
Title: Re: How to class your car for Auto-x (Subaru Content inside)
Post by: GrantC on November 18, 2011, 01:22:45 PM
Updated for 2012 rules.

Changes in Italics.

Highpoints:
06-08 WRX are in now in STX with the 02-05.
Stock can change either front or rear swaybar (but not both).
Master cylinder braces are now SP legal.
04-11 STI are in the new ASP containing old BSP cars and the slowest ASP cars. (And the fastest ASP cars *cough* GT-R *cough* went up to the new SSP)
2.5RS/2.5i are in the newly renamed "STC"
Title: Re: How to class your car for Auto-x (Subaru Content inside)
Post by: GrantC on April 30, 2013, 10:36:21 AM
Updated for 2013 rules.

Highlights:
-oil pickup/pan is allowed in ST_ now
-BRZ/FRS was classed in STX
-I added classing for JDM-yo cars.

(2014 has some very interesting proposed rules, with Stock being replaced by Street which will require street tires rather than R's, the ability to change wheel sizes, and a limited assortment of suspension mods to allow additional camber for mac strut cars.  Also, the class naming will then be Street -> Street Touring -> Street Prepared -> Street Modified...)
Title: Re: How to class your car for Auto-x (Specific Subaru Content inside)
Post by: Roadwarrior on April 30, 2013, 11:37:56 AM
So doing the ALK bumps you right up to SM, sounds like fun. Hopefully I can start making it out to some autox events again.
Title: Re: How to class your car for Auto-x (Specific Subaru Content inside)
Post by: snackers on April 30, 2013, 11:53:34 AM
So doing the ALK bumps you right up to SM, sounds like fun. Hopefully I can start making it out to some autox events again.
So do the subframe lock bolts and vf39 you have listed in your build thread. ;)
(I don't know how much of this you have installed yet)

(and possibly the cusco brace, but I don't care enough to look at the rules)
Title: Re: How to class your car for Auto-x (Specific Subaru Content inside)
Post by: Roadwarrior on May 01, 2013, 12:14:18 PM
So do the subframe lock bolts and vf39 you have listed in your build thread. ;)
(I don't know how much of this you have installed yet)

(and possibly the cusco brace, but I don't care enough to look at the rules)

Ya neither the lock bolts or turbo swap have been done. But the cusco brace is in there, and Im hoping to get a ALK for when I go to install the sti front control arms.
Title: Re: How to class your car for Auto-x (Specific Subaru Content inside)
Post by: GrantC on May 21, 2014, 11:14:03 AM
Updated for 2014 ruleset.

Highlights:
Title: Re: How to class your car for Auto-x (Specific Subaru Content inside)
Post by: goldrush on May 21, 2014, 11:33:18 AM
I didn't read anything about a FMIC. Would that put you right up to Prepared?
Title: Re: How to class your car for Auto-x (Specific Subaru Content inside)
Post by: sti-tom on May 21, 2014, 01:00:10 PM
I didn't read anything about a FMIC. Would that put you right up to Prepared?
Intercoolers are allowed in SP (street prepared)

Per 15-10-C.3. As utilized only on engines originally equipped with forced induction,
induction charge heat exchangers (also known as “intercoolers”
or “charge air coolers” [CACs]) are unrestricted in size and
configuration.
Title: Re: How to class your car for Auto-x (Specific Subaru Content inside)
Post by: Rathburn on June 06, 2014, 09:56:33 AM
Has the 2015 WRX been classed anywhere? DS? Not that it really matters to me yet, I'm not in it for championship points or anything. But would be nice to know.
Title: Re: How to class your car for Auto-x (Specific Subaru Content inside)
Post by: GrantC on June 06, 2014, 05:52:07 PM
Has the 2015 WRX been classed anywhere? DS? Not that it really matters to me yet, I'm not in it for championship points or anything. But would be nice to know.

I'd expect it's still in DS, but no I didn't see it officially classed yet.
Title: Re: How to class your car for Auto-x (Specific Subaru Content inside)
Post by: lakelouise02bugeye on January 22, 2015, 01:33:22 AM
Apologies for the prehistoric bump but I'd like to confirm my class I belive I fall in to sm because of the interior parts removed, ac removed, turbo swap, brakes, different gear ratio , and tires that I'll be using
Title: Re: How to class your car for Auto-x (Specific Subaru Content inside)
Post by: Cueman on January 24, 2015, 08:53:57 AM
Apologies for the prehistoric bump but I'd like to confirm my class I belive I fall in to sm because of the interior parts removed, ac removed, turbo swap, brakes, different gear ratio , and tires that I'll be using

Interior parts removed?  Rear seat and rear seat belts are all that is permissible in SM.  Otherwise your in prepared... or mod.
Title: Re: How to class your car for Auto-x (Specific Subaru Content inside)
Post by: GrantC on February 08, 2015, 09:09:06 PM
Apologies for the prehistoric bump but I'd like to confirm my class I belive I fall in to sm because of the interior parts removed, ac removed, turbo swap, brakes, different gear ratio , and tires that I'll be using

SM is _street_ modified.

As long as the only interior removed is the rear seat & trunk carpet...  beyond that, it's FP or XP.
Title: Re: How to class your car for Auto-x (Specific Subaru Content inside)
Post by: Munky on March 09, 2015, 06:53:24 PM
Well according to the 2015 rules Subaru Impreza WRX (all incl. STI) (2002-14), Legacy (Turbo) (2004-14), & Forester XT (2004-14) are all ASP now.

Subaru Impreza (all) (1993-2001), Impreza (2.5L) (NOC), Legacy & Outback (6-cyl, all) (1998-2004), Legacy & Outback (6-cyl, all) (2005-13) are DSP

Subaru Forester 2.5XT, Legacy 2.5GT (2005-12) are DSP

Subaru Turbo 4WD (all, NOC), Forester (non-turbo), Impreza 2.0i (2012-13), Legacy & Legacy GT are ESP

Edit: Yes, the XT is listed twice, this is right from the rule book: http://scca.cdn.racersites.com/prod/assets/2015-2-23_SCCA_Solo_Rules_book_online1.pdf
Title: Re: How to class your car for Auto-x (Specific Subaru Content inside)
Post by: Rad_Racer on March 10, 2015, 10:37:09 AM
The 2015 WRX got bumped from STU down to STX.  Interesting.  Does that mean it was performing slower than the 2009-2014 WRX?

Also, the 2015 WRX and STI aren't listed in the xSP classes.  Anyone know what's up with that?  Looks like they would fall into the SSP class with the current rules.. and then they would be brutally slaughtered.
Title: Re: How to class your car for Auto-x (Specific Subaru Content inside)
Post by: snackers on March 10, 2015, 11:46:35 AM
The 2015 WRX got bumped from STU down to STX.  Interesting.  Does that mean it was performing slower than the 2009-2014 WRX?

Engine size would be my guess.
2L instead of 2.5L.
Title: Re: How to class your car for Auto-x (Specific Subaru Content inside)
Post by: jackal on March 10, 2015, 04:24:40 PM
Damn!  Car I'm looking at is stuck in STU.
Title: Re: How to class your car for Auto-x (Specific Subaru Content inside)
Post by: Rad_Racer on March 10, 2015, 05:02:39 PM
Engine size would be my guess.
2L instead of 2.5L.

Just looking at the other cars in the class, it doesn't appear that engine size is a factor, though.  The 2.5L 06-08 WRX is in STX, so I'm not sure why the 09-14 are in STU.
Title: Re: How to class your car for Auto-x (Specific Subaru Content inside)
Post by: snackers on March 10, 2015, 06:25:03 PM
Just looking at the other cars in the class, it doesn't appear that engine size is a factor, though.  The 2.5L 06-08 WRX is in STX, so I'm not sure why the 09-14 are in STU.

I haven't looked at the new rules, so this is just conjecture.
The only other difference then is the 08 was the last year for the TD04, 09 went to VF52.
Title: Re: How to class your car for Auto-x (Specific Subaru Content inside)
Post by: LilDrunkenSmurf on April 03, 2015, 03:38:53 PM
http://scca.cdn.racersites.com/prod/assets/2015-3-31_SCCA_Solo_Rules_book_online_reduced.pdf
Title: Re: How to class your car for Auto-x (Specific Subaru Content inside)
Post by: Phr00t on April 03, 2015, 09:33:36 PM
The Calgary club classed my JDM 95 STI as ASP... Has anyone successfully had their JDM classed as CSP as listed above in the OP?
Title: Re: How to class your car for Auto-x (Specific Subaru Content inside)
Post by: LilDrunkenSmurf on April 03, 2015, 10:11:20 PM
I was told since my car is JDM, it's SM (in this case the Mini). If I could get classed as something more competitive, that'd be awesome.
Title: Re: How to class your car for Auto-x (Specific Subaru Content inside)
Post by: ultimatt on April 05, 2015, 06:35:54 PM
The Calgary club classed my JDM 95 STI as ASP... Has anyone successfully had their JDM classed as CSP as listed above in the OP?

Pretty much all of the USDM impreza based turbo cars are in ASP. That is where I would stick a JDM WRX or STi.

Title: Re: How to class your car for Auto-x (Specific Subaru Content inside)
Post by: ChanceSkeleton on April 06, 2015, 09:10:22 AM
Probably SM because I didn't look at the classes before I started modding. Cool =/.