I hate to say it, but one has nothing to do with the other. The fluid level of a transmission is unrelated to chassis roll during cornering, which should be fairly obvious. Either:

1) There was no actual problem and you were feeling phantom symptoms.
2) You have an intermittent suspension/chassis problem which has gone away on its own and happened to coincide with your tranny maintenance.
3) You were incorrectly describing the problem as excessive chassis roll when it was actually something else.
4) There is no 4.

Now wait a minute.. You don't know many many dozens of quarts he dumped into the tranny.;)

not denying the obvious

stating fact. i been tuning and installing shit into cars for 13 plus years now.

i dont feel phantom symptoms

a and b do not effect each other.

cept for this time. :)

This is potentially simple. The handling issue sounds like a side effect of the the center-diff having issues with low fluid. Having a programmable diff controller on my car has shown me just how much the differential on the STi contributes to handling...

I'd just be worried that there may have been damage to the gearbox if you were running so low on fluid as to effect the center-diff. :eek: How much fluid did you have to add!?

see. i knew that was exactly the reason.

people are too quick to think they know everything.

just because i cant explain something doesnt mean that its not happening. i dont have any fucking clue how quantum tunneling works EXACTLY. but i fucking know its the only way to go faster than light at the moment. explain it? yeah i can give you the gist. REALLY explain it? fuck noes.

i added about half a redline bottle. IE half a quart? tbh scott i was wondering the same thing. how fuckered up is my diff.

the REASON i had an idea that about why this could explain itself. sometimes when i lock the diff out using the DCCD i feel the same type of pushing or lack of swaybarish. so i knew it couldnt be impossible.

If the diff is locking too much, the car will get very pushy... especially at power on. I have my controller set to only 5% lock at low throttle levels in order to allow the car to turn mid-corner, and at 25% lock at full throttle to counteract the looseness that comes from stomping the throttle at corner exit. If you're pushy because of the diff, it means you're seeing more lock than you should. The auto mode is pretty good about making sure to release the center diff while the car is turning... but if you put it in manual that feature is removed, so at anything over 20% lock there will be binding, and even at lower levels you'll have noticeable handling changes, usually pushy while cornering and loose when stomping the throttle.

Half a quart low is actually quite a bit of missing fluid... IIRC the capacity is like 3.8 qt or so, isn't it? Any idea how it got so low? And I'm not so sure about the effects of low fluid on the center diff... it may be that there's no real correlation, and like ALM said, it's just a coincidence. But the center diff does in fact have quite a drastic effect on handling... so much so that I went from having a nearly undriveable car to setting the top PAX at Hawthorne simply by installing a DCCD controller so I wasn't running full-rear all the time. So if there's a way for the fluid level to effect the diff's lockup, I would believe that's your problem.

As far as damage... who know what happens when the diff is run low on fluid... hell, I still can't understand how the diff even works without catching on fire from all the friction of trying to run 50/50 lockup.

when i attempted to install the roll center kit from whiteline (speaking of which does anyone want to try to help me with that someday?) i pulled an axle out and destroyed the seal in the process. i drip smurf blood everywhere.

I need to do the roll kit on my car someday too... probably at the same time I'm installing my steering rack, if RevLabs ever sends the damn thing to me. :mad:

The axles shouldn't need to come out to do the roll-center kit... :?:

lol they dont. i know. when i was trying to remove the balljoint the fucker just fell out

That's happened to me too :lol:

A handling balance change towards under or oversteer due to a change in center differential locking is not equal to "my car feels like it has no swaybars".

Give him a break... he races in a straight line. :lol: ;)

yeah durrr....

i mean really. ill line up with every one of ya on a tripple tree. :)

and if youre running a strano front bar, and all of sudden have a reduction. like even a little loss in handling it feels huge.

or at least to ME it does.

Does your strano bar make A LOT of noise? My is really really loud, I would probably notice that first before the decreased handling.

mines really quiet. 200% more than my rear.

I'll simply refer you back to #3 I listed earlier.

Where did you get your Strano Bar? I was on Strano Parts and couldn't find it.

cant order online.

have to call.