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Old 10-01-2012, 04:23 PM   #1
Scooby South
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Default STX BRZ/FRS Setup-Discussion Thread

This thread will be for People pursuing STX in the BRZ.
Lots of "Different" kind of info here vs. the WRX..not much will cross over.

So some basic STX Rules:
-Allowed 265 tires on 9 in wheels if needed>
-Allowed Tune, E85, Headers w/cat, exhaust system and intake system up to the throttle body.
-sway bars, Bushings, Endlinks, Camber plates and any shock/spring package availalbe
-aftermarket BBK as long as they are the same size or larger than stock. Brake Lines can be changed to Stainless with any fluid.
-Lightweight battery as long as it puts out the same voltage. and you can re-locate it if needed to the trunk area.
-engine and tranny mounts as long as they are NOT solid
-Any LSD.
-Any Seats can be used but there is a minimum weight.


What CAN'T BE DONE:
-no engine internals
-no Tranny/rear diff Gear changes
-no throttlebody work
-Radiators have to comply with Stock


thats the Jest of it...there's other particular rules. But these are the basic ones.

Last edited by Scooby South; 10-01-2012 at 04:30 PM.
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Old 10-01-2012, 04:30 PM   #2
Scooby South
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Theres a couple of STX Build Threads available:
Scooby South's STX Build

And

Simmons-Racing STX build

Quote:
What we know:
-Late Model WRX Rear Suspension, WRX/STi Rear Sway bars bolt right up

-5x100 boltpattern

-Weight is 2762 lbs seems to be advertised weight.

-Torsion Rear LSD

-Steering is Rear Steer vs. Front Steer normally found on Subaru...so when you add camber....usually it toes' out the alignment...for general purposes...now. with the rear steer it should toe 'in'...sooo physical alignment will now become the norm at events...we'll see
this should get you started.
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Old 10-02-2012, 09:42 PM   #3
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Sweet!! Someone did see my post!
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Old 10-02-2012, 10:09 PM   #4
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^^^ T'was a great Idea..
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Old 10-03-2012, 07:12 AM   #5
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*checks watch*

Took you long enough!!!

--kC
(Kids these days. Sheesh)
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Old 10-15-2012, 10:26 AM   #6
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Count me in.
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Old 10-15-2012, 12:03 PM   #7
Scooby South
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So I made a wish list of my car and the approximate cost..I need to win the lottery..:/

Future STX mods
• Front Four Pot BBK upgrade with 2 pc Rotors $2000
• Header $500
• Over-pipe $300
• Catted Mid-pipe $400
• Rear Sub-Frame Bushing $50
• Frt LCA Bushings $200
• Rear Control Arms $600
• Engine and Tranny mounts (inserts) $???
• Front Adj Sway Bar $200
• 1.5 way Rear LSD $2500
• Front Splitter $250
• Tune… $1000
• Light weight Seats $750ea

with all this I expect to be around 2500lbs and have 200 Whp(Est) this is extra from what is already done:

* KW Variant 3 Suspension
* Front Camber Plates
* 17x9 Wheels
* Hankook 245/40/17 RS3's
* Kartboy Rear Endlinks
* Kartboy Rear Diff Bushings
* DIY Intake w/K&N panel filter
* Lightweight Battery
* Muffler delete
* Stainless Brake lines
* Motul Fluid Change
* additional Rear Bars as needed 16mm(WRX) 19mm (STi)
* Various other Kartboy items.
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Old 10-16-2012, 09:33 PM   #8
bdi
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Quote:
Originally Posted by Scooby South View Post
So I made a wish list of my car and the approximate cost..I need to win the lottery..:/

Future STX mods
• Front Four Pot BBK upgrade with 2 pc Rotors $2000
• Header $500
• Over-pipe $300
• Catted Mid-pipe $400
• Rear Sub-Frame Bushing $50
• Frt LCA Bushings $200
• Rear Control Arms $600
• Engine and Tranny mounts (inserts) $???
• Front Adj Sway Bar $200
• 1.5 way Rear LSD $2500
• Front Splitter $250
• Tune… $1000
• Light weight Seats $750ea

with all this I expect to be around 2500lbs and have 200 Whp(Est) this is extra from what is already done:

* KW Variant 3 Suspension
* Front Camber Plates
* 17x9 Wheels
* Hankook 245/40/17 RS3's
* Kartboy Rear Endlinks
* Kartboy Rear Diff Bushings
* DIY Intake w/K&N panel filter
* Lightweight Battery
* Muffler delete
* Stainless Brake lines
* Motul Fluid Change
* additional Rear Bars as needed 16mm(WRX) 19mm (STi)
* Various other Kartboy items.
Also, why no interest in fitting a 255 or 265 tire?
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Old 07-03-2019, 10:04 PM   #9
rkdc5z06
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Quote:
Originally Posted by Scooby South View Post
So I made a wish list of my car and the approximate cost..I need to win the lottery..:/

Future STX mods
• Front Four Pot BBK upgrade with 2 pc Rotors $2000
• Header $500
• Over-pipe $300
• Catted Mid-pipe $400
• Rear Sub-Frame Bushing $50
• Frt LCA Bushings $200
• Rear Control Arms $600
• Engine and Tranny mounts (inserts) $???
• Front Adj Sway Bar $200
• 1.5 way Rear LSD $2500
• Front Splitter $250
• Tune… $1000
• Light weight Seats $750ea

with all this I expect to be around 2500lbs and have 200 Whp(Est) this is extra from what is already done:

* KW Variant 3 Suspension
* Front Camber Plates
* 17x9 Wheels
* Hankook 245/40/17 RS3's
* Kartboy Rear Endlinks
* Kartboy Rear Diff Bushings
* DIY Intake w/K&N panel filter
* Lightweight Battery
* Muffler delete
* Stainless Brake lines
* Motul Fluid Change
* additional Rear Bars as needed 16mm(WRX) 19mm (STi)
* Various other Kartboy items.

those are some nice parts. more seat time over parts imo.
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Old 10-15-2012, 10:06 PM   #10
silverhks
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I can save you $250...

Splitters are not legal in ST.

Also if you went with aluminum seat, like Ultrashields, or Kirkeys, you could get both for about the $750 price not each. It depends on what you want.


As far as the lottery goes....

ONLY IF I DON'T GET IT FIRST!
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Old 10-16-2012, 12:30 AM   #11
bdi
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1000 for a tune?!?!
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Old 10-16-2012, 12:34 AM   #12
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Quote:
Originally Posted by bdi View Post
1000 for a tune?!?!
thats including dyno time and a custom tune/software/flash

I am purposely shooting these a little high just in case of any issues..


Bill
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Old 10-16-2012, 12:38 PM   #13
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Quote:
Originally Posted by bdi View Post
1000 for a tune?!?!
Yeah unfortunately right now Ecutek is the only game in town for the BRZ/FR-S and Cobb has zero interest in the car. If you are willing to just get your car tuned (say you live near a tuner) you can save $350 and not get the cable which lets you reflash the ECU yourself, but then when updates come or new features come out you are out of luck or need to borrow a cable from someone. I was hoping open source tuning would be further along but it's not yet.

You can probably get an LSD for a bit cheaper than that. The OS Giken one just released is around $2K, Cusco is around $1500 and I think the Kaaz is a little cheaper yet.

Definitely look for used seats. I have a pair of Sparco Prodrives which have been sitting in my garage for years now. Too bad they are so expensive to ship.
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Old 10-16-2012, 09:32 PM   #14
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Quote:
Originally Posted by dwx View Post
Yeah unfortunately right now Ecutek is the only game in town for the BRZ/FR-S and Cobb has zero interest in the car.
Thats interesting that cobb has no interest. I would hold out until OpenSource tuning is further along...shouldnt be long...its a popular car.
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Old 10-16-2012, 09:47 AM   #15
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Well the ECUtek cable and license is $700. Anything beyond that is what the tuner is actually charging you.
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Old 10-16-2012, 10:13 PM   #16
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255 will be my replacement...MOST likely..however.. I know someone thats using 255 RS3s right now...and with the extra weight penalty, he didn't think it was worth it ..meaning he thinks he's giving up time... soo he wishes he would have went to 245's instead...265's..absolutely overweight for little to no gains..and maybe even given up some time... I didn't mention it because I still have PLENTY of Rubber left for 2013..3000 miles and 107 runs..I will say that the car is VERY EASY on tires...so far.. I havn't even got to the real Goodie of the tire yet... 7/32's right now starting off at 9/32's..

Bill
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Old 10-16-2012, 10:53 PM   #17
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I too have been very happy with how easy on tires the BRZ is. I only have 1.5 degrees camber up front and 1.0 in the back and my wear has been light AND even. I've run Star Specs and R-comps with this alignment and the wear has been good on both types of tires.
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Old 10-17-2012, 12:12 AM   #18
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brz is super happy fun time
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Old 10-17-2012, 01:08 PM   #19
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Why waste $2K on a BBK? That shouldn't be necessary for an AutoX car.

Now...if you are wanting to do other stuff beyond AutoX, then I understand.
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Old 10-17-2012, 01:42 PM   #20
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In STX it's really for weight reduction and the fact it's a popular mod people do on street cars whether it provides benefit or not on an autocross course. It's certainly pretty far down the list for most people unless you are also tracking the car. It's a way to drop 20+ lbs of weight from the front.
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Old 10-17-2012, 02:31 PM   #21
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What he said. One package I saw is about 20lbs net and a great location to lose it from.
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Old 10-17-2012, 02:43 PM   #22
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That's surprising. I can see that benefit, then.

Also, from an aesthetic perspective, the BBK would look much better under a set of 17's than the stockers.
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Old 10-17-2012, 06:10 PM   #23
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yep...its all about the weight.. matter of fact contemplating Exhaust Strategy right now.. With the header back to be completely replaced for probably about 50lbs of weight savings over the stock stuff.. and thats a guess right now, 50lbs. won't know til some other items become available to see how close that is to the actual savings. Triple benefit on the BBK..

Bill
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Old 10-17-2012, 07:43 PM   #24
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Quote:
Originally Posted by Scooby South View Post
yep...its all about the weight.. matter of fact contemplating Exhaust Strategy right now.. With the header back to be completely replaced for probably about 50lbs of weight savings over the stock stuff.. and thats a guess right now, 50lbs. won't know til some other items become available to see how close that is to the actual savings. Triple benefit on the BBK..

Bill
You should have bought the Premium if you wanted the lightweight

Simmons
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Old 10-17-2012, 07:51 PM   #25
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Quote:
Originally Posted by Simmons-Racing View Post
You should have bought the Premium if you wanted the lightweight

Simmons
18lbs for the extra amenities???..I hear ya tho..

Bill
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