Hicas

[GreddyGo]

Hey People,

This is my first Nissan that has hicas, And I have noticed alot of threads from people wanting to remove it.

I'm just wondering what are the pro's and con's of having this removed? Is it mainly for drift and/or track? Or are they prone to play up so the easiest option is to actually remove it?

Any help would be great!

Thanks

Josh

[DOUGMO]

depends what you use the car for,

but if you drive hard it can get in the way,

especially if you like the car to slide around a bit

my 2c

[skylinegtts]

ive found that it depends on the way i enter the corner and steer through it to how much it actually interfers.

from my experience if you have to turn more during the corner due to the apex tightening its interfers more, aswell as wen you turn sharp quickly at speed.

[salad]

Hicas makes the car unpredictable near the limits as the computer acts slow, so you dont really know what is going to happen. If the rear toe angles are fixed, you always know what is going to happen

[GreddyGo]

So it will only really be a problem with hard street driving or track?

I haven't really feeled it interfer when driving "spirited" on the streets.

Is there a computer upgrade for it that get rectify the problems at higher levels of driving?

I have seen an altessa system somewhere before? is this it?

Cheers

Josh

[salad]

Attessa is 4wd from GTR and GTS-4. I dont think there are any upgrade computers around because it is simply not worth it. Just rip it out

[sav man]

HICAS can catch you out with spirited driving, if a corner sneaks up on you, and you carry the breaks through the corner. The rear of the car floats round all over the place, not a good feeling.

[scathing]

I'm just wondering if you know what HICAS actually is.

In case you don't, its active rear steering. Unfortunately the system is reactive and hydraulically / electrically operated, and so as people have said it doesn't react quickly and at the limit it makes changes you didn't request.

Around town and at 7/10 it probably does improve handling, but if you're really pushing it you may find it counterproductive.

[Mr. Keets]

Cons: 25 kilos of unwanted crap in my car

Pros: Good start to shedding some weight on the 32GT-R.

Really. It kinda freaks me out a little...unpredictable.

[GUN_METAL_GTR32]

just remove it.

that way u can drift your car in 3rd gear without it kicking in and f**king u up by trying to straighten it up

i also agree its way too unpredictable/dangerous

[GreddyGo]

I'm just wondering if you know what HICAS actually is.

In case you don't, its active rear steering. Unfortunately the system is reactive and hydraulically / electrically operated, and so as people have said it doesn't react quickly and at the limit it makes changes you didn't request.

Around town and at 7/10 it probably does improve handling, but if you're really pushing it you may find it counterproductive.

I do know what HICAS is and know how it works, I was a technician for Mitsubishi and aome of there cars have a similar system, but have never heard any cmplaints about if from customers.

Hence when I asked wy people with the Nissan system want it "locked"

Thanks everyone else for the comments

Cheers

Josh

[gts4diehard]

If your car is in good nick, i.e. the bushes that enable the rear wheels to steer aren't stuffed allowing more movement than what is intended - then I think it does a reasonable job.

I doubt there are many people who can outdrive the hicas computer, hardly any body is capable of driving a GTR 10/10s anyway.

Before you blame the Hicas jack up the rear and grab a hold of the rear wheels, if you get any movement (as in the direction the car would steer the wheels) at all then something needs fixing.

Although I don't think there should be any probs with your R34 unless it has done higher kms.

[siksII]

I doubt there are many people who can outdrive the hicas computer, hardly any body is capable of driving a GTR 10/10s anyway.

my bushes are all fine, there is no excess movement and the only effects that i feel from hicas are negative, and this is with street driving in my r33-gts-t with the electronically actuated hicas.

if there are good effects when it it doing what it does during normal driving then it is doing it well because i dont notice and the car feels good, but i doubt it makes up for the ill effects when driving hard.

even friends driving behind the car have seen how hicas unsettles it, espeically when turning into a corner.

plenty of people drive their gtrs 10/10ths and what do you think constitutes 'outdriving the hicas computer' anyway???

my answer to the first poster would be if you like cruising around and so far have not noticed anything out of the ordinary dont bother getting rid of it.

[WogsRus]

i don't know, i have no problem running mine on the track and all. I think it's great arround town too, helps you in small streets. LOL.

[GTR32GUS]

^^^^^^

I thought hicas only worked above 70 km/h , i hope your not doing 70 down small streets

[salad]

There are more inputs to the hicas computer than just speed. It definitely works under 70kms aswell, you can feel it. But it doesn't work when you're not pulling much cornering force. i.e. it will not work when you're parking. So it should not help down small streets.

Also the toe angle changes are limited to around 1deg, not enough to help you manouvre tight things

[GTR32GUS]

Do the rear wheels turn the same direction as the front wheels or do they go boths way

[salad]

Apparently, on turn in they turn in the same direction as the front wheels, but after the weight has moved, they turn in the opposite direction, hence the feeling of the rear being unsettled and sliding a little

[djr81]

Apparently, on turn in they turn in the same direction as the front wheels, but after the weight has moved, they turn in the opposite direction, hence the feeling of the rear being unsettled and sliding a little

Upside down, Miss Jane. The turn opposite phase on turn in then same phase mid corner.

Which is why HICAS retains the ability to scare the living bejeesus out of you when you are hustling along & need to turn in on an off camber entry...

[salad]

Ah, learn something new everyday

but still... MISS JANE!?

Edited December 1, 2006 by salad