Turbo Suspension
 

So I finally boosted my BRZ. The turbo spools fairly quickly (I think) around 3500-4000.

I have 18x9.5 all around and some (probably terrible tires). I assume tires are gonna be a big part of it, but I was wondering if anyone can offer some suggestions on how to add some grip and stability to the car now that it is turboed.

So far I have:
Exhaust (Ultimate Racing
Headers (Gruppe-S)
Turbo kit (Ultimate Racing)
18x9.5 (Miro 111)
Coilovers (Tein Street Basis Z- starters for now)
Shift Bushing (whiteline)
Short throw (Top Speed)
Master Brake Cylinder (Radium)
Oil Catch Can (Mishimoto)
Other small upgrades that don't pertain to suspension

I was looking at sway bars, but never made the purchase.

Basically, is there anything I can upgrade to help maintain the balance of the car now that it is boosted? I don't know enough about suspension even after reading up on it quite a bit (Damn cars and unlimited knowledge). I assume the biggest thing to do is get some real tires on their first, but hoping to make the car just as good as it is without turbo power.

Answered your own question.
Tires. Get sticker ones

What size do you have on now? Please don't tell me is smaller than a 235.

tire pressures are also important. My tires were squirrelly as hell when they were up to 36 psi. Lowered them to 32 and the grip improved. Experiment

Play with tire pressure, get a better alignment, buy stickier tires.

Stickier tires.

Camber bolts or camber plates for front camber adjustment.

Rear LCA to adjust camber.

Hold off on the sway bars unless you know what they do and how it pairs with tire compound. People sometimes go too stiff and overwork the tires resulting in less grip overall.

Tires + alignment
Get some toe-in on the rear, minimum 1/8" (~0.3 degrees) total imho
I've got more on my car and a whole lot less power

Ride heights and crossweight could be playing a factor too along with damper settings and tire pressures and sway bars. There's no reason that with good tires you can't have a setup that's stable.

Tyres and an alignment are a great place to start. If traction is an issue you can see if softening the damping on your rear shocks help. I don't have experience Tiens tho so its something you will have to have a play with.

Thanks all for the responses. I will try all of these and wait on the sway bars.

People choose to have toe-in on their cars? SMH.

jsimon7777: many on rwd cars dial in slight toe-in for a bit more stability. Heck, even stock alignment is:
Toe (Each Wheel): C + D: 0°10' +/- 0°15' (0.16° +/- 0.24°)
Toe (Total): 2.0 +/- 3.0 mm(0.0787 +/- 0.1181 in.)
Imho nice article.

Rear? Yes. Makes the car less skittish under power and can result in faster lap times. At least, done right.

In most cases, 'done right' means 'virtually none', if you don't want to numb up response. I think zero is the ideal number to shoot for, personally, if you're concerned with keeping a lively feeling setup and still have decent tracking.

Incredible as it may seem, some people don't place high value on tire longevity.

;)

I run what probably amounts to zero toe with a toe-in bias in the rear, but will be experimenting again this year with more. However, I autocross - and setup requirements are different than what might be fastest on a traditional race course. Ultimately fastest may be zero toe, but I'd guess that a little toe-in will be more consistent for drivers that aren't perfect - and that's most of us; certainly is me. I forget what happens to toe under compression, but that also plays a role.

Also, for street, I'd nearly always recommend a touch of rear toe-in.

And absolutely not toe-out in the rear.