BC ER coilovers or OS Giken LSD??
 

Which of these two would be more beneficial for autocross? I'd love to get both but it gets really expensive to get all at once. I'm on my second season auto crossing and Im fully hooked. Since Im supercharged it automatically puts me in SSM so I'm not expecting win any trophies for the time being but want to get the car ready for second set of wheels with hoosiers down the road. I'm running stock suspension with Michelin PSS 265/35R19 front and 305/30R19 Rears. Still about half the life left on tires so there here to stay for now. Along with LSD or Coilovers I will be getting SPL front camber arms, whiteline sway bars and 20mm spacers to increase front track width. The car is not DD so I'll be going with little more aggressive alignment as well. I'm leaning towards the LSD because I keep finding myself constantly modulating the throttle. I think with my power levels the LSD would help a lot to put the power down on corner exits. But I'm not 100% sure which one would make bigger impact on the car's handling performance. If any of you could chime in I'd greatly appreciate :tup:

Is there enough budget for the LSD AND anti-sway bars?

Yes, it's going to be sway bars, spl arms and either LSD or coilovers.

Not even close....the LSD will be of more benefit.

In that case, I'd go with LSD first.

Coils make:

• less comfort
• more $$
• need alignment parts then

LSD is spectacular upgrade but is nearly $2k installed.

You will realize more benefits from the LSD than the coils.

Think otherwise? Show me the lap time that proves it :tup:

I did both at the same time otherwise I would have some imperial data to show. But the LSD is def. good for atleast a sec or two.

Or get another set of wheels and put some A6's on dem bad boys, that will be atleast 3-5 secs difference.

I did coils first, looking back, would probably say that LSD would have made a bigger difference early on. Both are great though. For me I guess it was nice to have driven on a crappy lsd for a while before I put in a good one so I could tell the difference. The coils/springs/suspension crap actually slowed me down for a good 6-7 months. The LSD I would think would be instant, no brainer time improvements for anyone.

LSD forsure and if you can throw in some sway bars even better.

Thanks everyone for your opinions! Now I know in which order to go with. LSD for now and definitely coilovers for next season. I already can't wait to install and test the new parts out. :driving:

The nismo is rough as they come so I would imagine quality coilovers would not be much worse haha
All the work performed is by me only so extra $$$ for parts :tup:

Thanks for sharing your experience. Few months back I was pretty much set on coilovers and then started reading up on LSD upgrade. The more I read I started to realize what's the benefit of coilovers if I can't put the power down properly on the track/autoccross. Good thing I asked so now after not one vote on coils I can make the purchase with peace of mind that I made the right choice for the time being.

Do you say that because you weren't sure how to set up the suspension or did you just need time to develop your skills and catch up to the car?

LSD is definitely on my list, but I think I'd want to keep the stock gearing on mine just because it's still a daily driver and probably will be until I can find a beater Miata to DD.

All the above lol.

Suspension ultimately allows you to learn more/do more, but there is the whole task of finding a ride rate you like, sway bar madness, setting the dampers, etc. There is also possibly a skillset problem that you will need to overcome-especially if you are not already an advanced level driver(which I am not). You are basically going to need to relearn your car for the next 6 months. Everything you got used to feeling in your oem setup is gone.

Compare that with a LSD, hell it would take 2-3 seconds off anyone's time probably within their next 2 track days. It's very obvious what it does, requires no skill, and is just mash the pedal goodness. It's a no brainer, car puts down more power and rear end doesn't slide around due to wheel slip, end of story.

Also IMO, if you are going to pay for the labor/install of installing a LSD for track use, just do the 4.08 gear upgrade at the same time. It's an extra 1100.00 yes, but there is no way you won't love it.

Does Synchro Rev-Match work wiht the 4.08 gears ?

Would anyone know exact part # for the extra stub axle that's needed with os Giken diff when upgrading from 2011 nismo?

It will fail and shut off when you redline. It works for daily driving though as long as you don't hit the rev limiter. ECUTEK has the only fix that I know of. I don't use syncro rev on track though.

I can agree with the downsides of coils but they do have their ups. I just put custom made coils on my car and while I do notice that I can put the power down better and earlier out of turns, the car is a bit more rough on the bumps. It has also taken me a long time to get them setup right as far as height and damping go. If I had to do it again I would have just gone with camber arms and a diff first then coils afterwards.

+1 for LSD
The stock suspension is made specifically for the car, and relies on body roll to shift the weight of the car and keep traction. Usually with coilovers, you just stiffen the suspension and can actually make your car handle worse than it did stock. Unless you spend like 3-4k or more on one of the more proven (track ready) brands like KW, you're just wasting cash. You may see slight improvement, but for the money, an LSD would be a much better investment imho.

Just installed whiteline sway bars and encountered a slight problem. It appears that the rear sway bar's lateral locks are too small to fit around the bar. Will the sway bar move out of position a lot or should I just get the proper replacement locks asap?

Here is the photo

^^Run the stock rear swaybar (or no rear swaybar at all), and the Whiteline front.

I actually just had the LSD vs coilovers Dilemma like a week ago. The spring rates and the feel of my car in corners drives me absolutely insane. It feels like a boat, and far too dramatic under weight transfer. It's way way WAY too soft for my liking. The open diff. (My car is a base) drives me crazy as well, however I decided to first order a set of custom coilovers and SPL camber arms BEFORE the LSD to get a better feel of the car before I dive into a LSD. A LSD will more than likely give you instant speed and dramatic time cuts, but if you are going with coilovers down the road, you may have to re-learn how to drive the car once the coilovers and alignment are done. If you do coils and stuff FIRST, the learning curve could be less and easier once the LSD is installed because you'll have already done most of your tuning already. I hope this makes as much sense as it does in my head lol. Its all personal preference at the end of the day. They'll both be in the car at some point

If my car was base model I'd most likely would do the same thing. Since its a Nismo, the suspension is pretty stiff as is, plus I am putting down over 500 whp
so LSD should help to put the power down a lot more efficient. I set the sways at stiffest in the front and softest at the back. I have autocross in 2 weeks so well see how it performs. I also ordered the OS GIKEN a week ago so hoping it'll get delivered in time for that event as well.

Oh jesus. Had no idea it was 500whp. My mistake. Yea LSD will help you out alot and should be done asap lol. Good choice.

http://www.the370z.com/brakes-suspen...-roll-bar.html

Some people have had issues.

:iagree:

Allow myself to introduce... myself.

I have issues.

Also, the Front Sway blows goats. Get yourself a proper pair of sways. :tup:

Looks like mixed opinions. Gonna have to wait and see what happens to mine. Fingers crossed!