Author Topic: How to class your car for Auto-x (Specific Subaru Content inside)  (Read 16371 times)

0 Members and 1 Guest are viewing this topic.

Offline GrantC

  • WSC Moderator
  • rivaling ZZ-TOP
  • *****
  • Posts: 13879
  • Motorsports is fun.
  • Location: St. Albert
  • Ride: Fender stripes, a high flow cat, yellow high beams, and an exhaust.
The possible classes for a Subaru are:
  • 2002-2007 WRX (and Forester XT 2003-2008 and Legacy GT 2005-2012)
    • DS (D Street) and DS-R (D Street-R)
    • STX (Street Touring eXtreme)
    • ESP (E Street Prepared)
    • SM (Street Modified)
  • 2008 WRX
    • DS (D Street) and DS-R (D Street-R)
    • STX (Street Touring Xtreme)
    • ASP (A Street Prepared)
    • SM (Street Modified)
  • 2009-2013 WRX
    • DS (D Street) and DS-R (D Street-R)
    • STU (Street Touring Ultra)
    • ASP (A Street Prepared)
    • SM (Street Modified)
  • 2004-2013 STI
    • BS (B Street) and BS-R (B Street-R)
    • STU (Street Touring Ultra)
    • ASP (A Street Prepared)
    • SM (Street Modified)
  • All 2.5RS (and 2.5i)
    • GS (G Street) and GS-R (G Street-R)
    • STC (Street Touring Compact)
    • DSP (D Street Prepared)
    • SM (Street Modified)
  • 2.0i & other Impreza not listed.
    • HS (H Street) and HS-R (H Street-R)
    • STF (Street Touring FWD)
    • FSP (F Street Prepared)
    • SM  (Street Modified)
  • BRZ
    • CS (C Street) and CS-R (C Street-R)
    • STX (Street Touring eXtreme)
    • CSP (C Street Prepared)
    • SM  (Street Modified)
  • SVX
    • GS (G Street) and GS-R (G Street-R)
    • STX (Street Touring eXtreme)
    • ESP (E Street Prepared)
    • SM  (Street Modified)
  • JDM WRX/STI
    • Due to not being sold here in sufficient #'s they are not eligible for any stock class
    • Street Touring again uses the same eligibility requirements as stock, so they are not eligible for any ST_ class.
    • CSP (Canadian rules allow JDM cars to be classed in SP, using the catch all or NOC statements. So "C Street Prepared" for "Sedans over 1.7L & under 3.0L not otherwise classified.")
    • SSM (Super Street Modified.  due to being specifically excluded from SM.  (Again, local clubs may allow JDM vehicles in SM)
  • 2009+ Forester, All Tribeca
    • SUV's aren't allowed in autox.  These are taller than they are wide and are a rollover risk.
    • If modified to the point that the above is no longer true then they're able to run.
    • (Same as a Dodge Caliber, or a base Fiat 500...)
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

Updated for 2014 rules, May 21, 2013.

Offline GrantC

  • WSC Moderator
  • rivaling ZZ-TOP
  • *****
  • Posts: 13879
  • Motorsports is fun.
  • Location: St. Albert
  • Ride: Fender stripes, a high flow cat, yellow high beams, and an exhaust.
Re: How to class your car for Auto-x (Subaru Content inside)
« Reply #1 on: June 13, 2011, 09:23:54 AM »
In Street you can do:
  • A single swaybar, either front or rear, and associated mounts/links/bushings.
  • 140+ TW (200+ for 2015) DOT approved tires that start with >=7/32" tread in any size (aka. "Street Tires")
  • Wheels +/- 1" diameter, same width as stock and within 1/4" (6.35mm) offset) for your year of car, no your 2002 WRX (6.5" wide wheels) can't use 7" wide wheels like the 2011 WRX.
  • Shocks, adjustable damping is fine but the spring perch and shock length much be the same as stock.
  • Catback exhaust (or removed exhaust as long as it exits behind the driver and meets sound regulations)
  • Alignment using factory adjustment (including shims, special bolts, if offered by the manufacturer)
  • Wear items (Air filter, brake pads, spark plugs, fluids)
  • "Comfort & Convenience" mods which have no effect on performance and/or handling and do not materially reduce the weight of the car are permitted.  Ie. Gauges, Turbo Timers, Shift Knob

In Street-R you can do:
Everything allowed in Street with the following exceptions.
  • There is no TW limit so you can run DOT approved tires in any size (aka. "R-compounds" with just 2 circumferential grooves for "tread)
  • OEM (sized) wheels (within 1/4" (6.35mm) offset) for your year of car, no your 2002 WRX can't run the 2011 WRX wheels.

In Street Touring you can do:
  • Everything allowed in Street
  • Replace front seats with "fully upholstered" seats weighing at least 25lbs including mounts
  • Remove rub strips, badges, foglights and rear wing (as long as you have a functioning 3rd brake light)
  • Roll (but not pull/flare/cut) fenders, just flatten the inside lip.  Must keep stock profile.
  • Body kit that is OEM parts or dealer option *in the US*, ie. STI Limited lip for 06/07
  • Tires must be meet eligibility for Street Class and no wider than the following
    • STF, STC – 225 mm
    • STX (AWD), STU (AWD) – 245 mm
    • STR (2WD) - 255 mm
  • Wheels in the following sizes
    • STF, STC up to 7.5” wide
    • STX up to 8.0” wide
    • STU – unlimited width
    • STR (2WD) - 9" wide
  • Drilled/slotted rotors are allowed.
  • Brake lines.
  • You can do a big brake kit as long as the rotor is at least as thick and at least as large of diameter as stock.  2-piece rotors are allowed. Must be "bolt on" no welding allowed.
  • 2-point strut bar, front & rear
  • lower brace, as long as the only places it attaches are within 2" of suspension attachment points
  • coilovers, with spherical bearings and 100% metal top hats are allowed.
  • swaybars
  • Bushings and motor mounts can be replaced, as long as they don't weigh less than stock. (offset bushings too!)
  • Camber plates & camber bolts *or* different lateral links or LCAs.
  • lightweight battery
  • Air intake/hoses can be changed up to the Throttle body, or tubo inlet whichever comes first.
  • Header & downpipe, as long as the downpipe has a cat.
  • You can consolidate down to just one catalytic converter as long as the entry to it is no more than 6" downstream of the exit of the stock cat.
  • Reflashed ECU, as long as no CEL/MIL are disabled and(new for 2013) all boost tables are 100% stock.  WGDC, boost targets, even the speed limiter for the 02-05 cars.
  • short shifter
  • Lightweight pulleys
  • Oil pan & pickup
  • remove plastic engine "cosmetic covers" ie. the Legacy GT cover

In Street Prepared you can do:
  • Everything from Street
  • Everything I've mentioned from Street Touring
  • Any size wheels
  • Any size DOT tire (ie. R-compounds)
  • Cut/pull/flare to fit tires.
  • Any fully upholstered seat
  • Any steering wheel.
  • Front splitter
  • Up to a 10" Spoiler (not *wing* spoiler, air can't flow under it)
  • Remove Radio, but not wiring
  • Swap to non-sunroof roof
  • remove sunvisors
  • any brake master cylinder
  • Master cylinder brace
  • Remove A/C, but not heater core.
  • Add heat shields
  • change intercooler/piping/hoses as long as no cutting is required.
  • Stock turbo no porting, no coating, no swaps
  • BOV/BPV can be changed
  • Water injection is allowed
  • catless exhaust
  • fuel pump
  • fuel injectors
  • Any ECU tune or standalone.
  • 3-port BCS
  • Modify/remove emissions devices.
  • radiator
  • metal engine/transmission mounts
  • replace subframe bushings, but with no more metal than stock.
  • lightweight clutch/flywheel
  • Add/change limited slip differentials
  • port intake/exhaust no further than 1" from port/manifold interface
  • Update/backdate to the engine/transmission from different year of car that appears on the same line in the rules.  Eg. 2.5L WRX swap into a 2002 WRX, or a 2.2L swap into a Impreza L) Must be done as an entire unit, not the head from one, block from another, turbo from a 3rd.
In Street Modified you can do:
  • Everything in Street, Street Touring and Street Prepared
  • Turbo swap
  • Engine swap to any motor from the same brand, ie. JDM STI swap into a 1993 Impreza L AWD with crank windows.
  • Subframe swap to facilitate engine/drivetrain swap, or modify stock subframe the minimum amount required.
  • Internal engine mods (want to do cams/pistons/crank?)
  • Any transmission (Want to do a 2-speed cf housing, titanium geared transmission?  Sure!)
  • Any fuel system
  • Any steering rack that bolts to stock locations
  • Rear diff locking bolts.
  • Anti-Lift Kit or other bolt-on suspension mods (as long as they bolt to stock location)
  • Any brakes provided they use iron rotors/drums.
  • CF Hood, fenders, trunk.
  • Remove rear seat
  • Any wing (up to 8 square feet total area), no wider than car, no higher than 6" above roofline, no further forwards than 6" ahead of rear tire, no further back than rear bumper.
  • Any splitter/canards, no more than 6" forwards from bumper and no further back than center of front wheels
  • Replace sunroof with lightweight panel
  • Radio wiring and airbags may be removed.
  • Minimum weight is the lower of the following:
    • 3100lbs
    • 1800 + (displacement in L + 1.4)*300 lbs -200 (if tires 275mm or less) =

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

Updated for 2014 rules,May 21, 2013.

My opinion of where each car is most competitive:
  • 02-08 WRX: STX (but ESP can be fun if you need "stage 2)
  • 09-10 WRX: STU (Kind've between a rock and a hard place for this particular model.  In DS you'll be against the 2011+ with wider wheels, in STU and ASP you're against the STI w/ diffs & a bigger turbo than you)
  • 11+ WRX: DS
  • 04-13 STI: STU (But ASP or SM can be very competitive while being an even better street car.)
  • 2.5RS: DSP
  • Old school Impreza: SM
  • Legacy GT, Forester XT: ESP
  • BRZ: STX

Offline funk32

  • rivaling ZZ-TOP
  • ****
  • Posts: 3679
  • it never ends..... avatar courtesy of Danny
  • Ride: GD Time Attack car
Re: How to class your car for Auto-x (Subaru Content inside)
« Reply #2 on: June 13, 2011, 09:25:06 AM »
Thank you very much! Very helpful

Offline GrantC

  • WSC Moderator
  • rivaling ZZ-TOP
  • *****
  • Posts: 13879
  • Motorsports is fun.
  • Location: St. Albert
  • Ride: Fender stripes, a high flow cat, yellow high beams, and an exhaust.
Re: How to class your car for Auto-x (Subaru Content inside)
« Reply #3 on: June 13, 2011, 09:27:20 AM »
neverLift did a nice thread on what to bring to an autox:
Auto-x Advice!

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
snackers 08 money pit - wrexin' it up
Project 2.5RS
CanehdianJ's grumpy old fart mobile: Soon with softer suspension
piknockout's STU Autocross Build - 2006 STi sponsored by Agile Auto (NASIOC)
JW2's 2011 WRX: D-Stocker Rocker (NASIOC)
ESP-The 2002 WRX Project (NASIOC)
Karlton's 06 SGM STI - Full Race Custom Fender Flares! (IWSTI)
Jerkmobile - what is that you saaaaaay?
Jutes Project STi

NASIOC even has a subforum just for autocross, with stickies of people discussing their setups for all the above classes:
Autocross

Offline sti-tom

  • beards comin in nice
  • ***
  • Posts: 514
  • Location: Edmonton
  • Ride: 2018RS3, 1991 miata
Re: How to class your car for Auto-x (Subaru Content inside)
« Reply #4 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

Offline GrantC

  • WSC Moderator
  • rivaling ZZ-TOP
  • *****
  • Posts: 13879
  • Motorsports is fun.
  • Location: St. Albert
  • Ride: Fender stripes, a high flow cat, yellow high beams, and an exhaust.
Re: How to class your car for Auto-x (Subaru Content inside)
« Reply #5 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"?

Offline Munky

  • rivaling ZZ-TOP
  • ****
  • Posts: 1389
  • Location: Edmonton
  • Ride: '06 WRX
Re: How to class your car for Auto-x (Subaru Content inside)
« Reply #6 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.

Offline GrantC

  • WSC Moderator
  • rivaling ZZ-TOP
  • *****
  • Posts: 13879
  • Motorsports is fun.
  • Location: St. Albert
  • Ride: Fender stripes, a high flow cat, yellow high beams, and an exhaust.
Re: How to class your car for Auto-x (Subaru Content inside)
« Reply #7 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.

Offline Munky

  • rivaling ZZ-TOP
  • ****
  • Posts: 1389
  • Location: Edmonton
  • Ride: '06 WRX
Re: How to class your car for Auto-x (Subaru Content inside)
« Reply #8 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.

Offline snackers

  • WSC Pot Stick Posse
  • rivaling ZZ-TOP
  • ****
  • Posts: 9036
  • More uneven camber than the Westerner lot
  • Location: Deadmonchuk
  • Ride: Bucket of bolts and sadness
Re: How to class your car for Auto-x (Subaru Content inside)
« Reply #9 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.

Offline jer

  • Admin
  • rivaling ZZ-TOP
  • *****
  • Posts: 3181
  • Location: not edmonton, AB
  • Ride: 06 WRX Wagon
Re: How to class your car for Auto-x (Subaru Content inside)
« Reply #10 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

Offline THE EDJ

  • rivaling ZZ-TOP
  • ****
  • Posts: 4328
    • THE EDJ on Flickr
  • Location: The Promised Land
  • Ride: Explorer
Re: How to class your car for Auto-x (Subaru Content inside)
« Reply #11 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!
"Experiencing the world through endless second hand information isn't enough. If we want authenticity, we have to initiate it." ~ Travis Rice
THE EDJ on flickr

Offline canehdianJ

  • rivaling ZZ-TOP
  • ****
  • Posts: 4127
  • Location: Impostor that owns no Subaru's
  • Ride: 2006 Lotus Elise 111R, 2016 Golf GTi
Re: How to class your car for Auto-x (Subaru Content inside)
« Reply #12 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

Offline Munky

  • rivaling ZZ-TOP
  • ****
  • Posts: 1389
  • Location: Edmonton
  • Ride: '06 WRX
Re: How to class your car for Auto-x (Subaru Content inside)
« Reply #13 on: June 13, 2011, 01:07:07 PM »
tell me about it.... :P

That was your choice....I would have done the same.

Offline LilDrunkenSmurf

  • rivaling ZZ-TOP
  • ****
  • Posts: 18667
  • This is why I can't own nice things..
  • Location: Calgary
  • Ride: hopefully doesn't trigger ekai
Re: How to class your car for Auto-x (Subaru Content inside)
« Reply #14 on: June 13, 2011, 01:10:25 PM »
SM =S
If the sea was vodka, and I was a duck.
I would swim to the bottom, and drink my way up.
But the sea isn't vodka, and I'm not a duck.
So give me the vodka, and stfu.
If you're having forum problems, I feel bad for you son, I got 99 problems but your post ain't one.

Offline GrantC

  • WSC Moderator
  • rivaling ZZ-TOP
  • *****
  • Posts: 13879
  • Motorsports is fun.
  • Location: St. Albert
  • Ride: Fender stripes, a high flow cat, yellow high beams, and an exhaust.
Re: How to class your car for Auto-x (Subaru Content inside)
« Reply #15 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

Offline Munky

  • rivaling ZZ-TOP
  • ****
  • Posts: 1389
  • Location: Edmonton
  • Ride: '06 WRX
Re: How to class your car for Auto-x (Subaru Content inside)
« Reply #16 on: June 13, 2011, 02:23:34 PM »
Doesn't help that a penitential $200-600 useless part broke.

Offline GrantC

  • WSC Moderator
  • rivaling ZZ-TOP
  • *****
  • Posts: 13879
  • Motorsports is fun.
  • Location: St. Albert
  • Ride: Fender stripes, a high flow cat, yellow high beams, and an exhaust.
Re: How to class your car for Auto-x (Subaru Content inside)
« Reply #17 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)

Offline ultimatt

  • WSC Supporter
  • rivaling ZZ-TOP
  • *****
  • Posts: 2901
  • Thrusting in the direction of the problem.
  • Location: Edmonton
  • Ride: Thundercougarfalconbird
Re: How to class your car for Auto-x (Subaru Content inside)
« Reply #18 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.
<+  Hurrbie> becuase ultimasshole

Offline GrantC

  • WSC Moderator
  • rivaling ZZ-TOP
  • *****
  • Posts: 13879
  • Motorsports is fun.
  • Location: St. Albert
  • Ride: Fender stripes, a high flow cat, yellow high beams, and an exhaust.
Re: How to class your car for Auto-x (Subaru Content inside)
« Reply #19 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".

Offline Zac

  • rivaling ZZ-TOP
  • ****
  • Posts: 1563
  • I liek stuff
  • Ride: 05 LGT Wagon
Re: How to class your car for Auto-x (Subaru Content inside)
« Reply #20 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?

Offline GrantC

  • WSC Moderator
  • rivaling ZZ-TOP
  • *****
  • Posts: 13879
  • Motorsports is fun.
  • Location: St. Albert
  • Ride: Fender stripes, a high flow cat, yellow high beams, and an exhaust.
Re: How to class your car for Auto-x (Subaru Content inside)
« Reply #21 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...

Offline snackers

  • WSC Pot Stick Posse
  • rivaling ZZ-TOP
  • ****
  • Posts: 9036
  • More uneven camber than the Westerner lot
  • Location: Deadmonchuk
  • Ride: Bucket of bolts and sadness
Re: How to class your car for Auto-x (Subaru Content inside)
« Reply #22 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.

Offline jer

  • Admin
  • rivaling ZZ-TOP
  • *****
  • Posts: 3181
  • Location: not edmonton, AB
  • Ride: 06 WRX Wagon
Re: How to class your car for Auto-x (Subaru Content inside)
« Reply #23 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!

Offline GrantC

  • WSC Moderator
  • rivaling ZZ-TOP
  • *****
  • Posts: 13879
  • Motorsports is fun.
  • Location: St. Albert
  • Ride: Fender stripes, a high flow cat, yellow high beams, and an exhaust.
Re: How to class your car for Auto-x (Subaru Content inside)
« Reply #24 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