Lsd + Vsa
#1
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Lsd + Vsa
Is the TL the first acura to have both VSA and LSD? Since they have both, is there a way we can get an LSD into our TSX and still have the VSA work?
#3
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Originally posted by darth62
What about the CL Type S? Didn't that have VSA and LSD?
What about the CL Type S? Didn't that have VSA and LSD?
Well...it had LSD for sure..but I dont know about VSA
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#4
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Originally posted by fdl
Well...it had LSD for sure..but I dont know about VSA
Well...it had LSD for sure..but I dont know about VSA
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#5
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Originally posted by provench
The CLS 5AT has VSA and the 6MT CLS has LSD, but not VSA. So yes I think the '04 TL is the first car to have both from Acura ... not sure how they work together though
The CLS 5AT has VSA and the 6MT CLS has LSD, but not VSA. So yes I think the '04 TL is the first car to have both from Acura ... not sure how they work together though
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#7
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#8
Hey folks,
Phantom Grip was now updated their website to include the TSX for LSD upgrade kits.
Of course, I don't know if this would be any good -- but that $3xx price seems pretty attractive, as opposed to the $11xx that Quaife might want.
http://www.phantomgrip.com/product_lists.php?make=Acura
Test_Drive
Phantom Grip was now updated their website to include the TSX for LSD upgrade kits.
![Smile](https://acurazine.com/forums/images/smilies/smile.gif)
Of course, I don't know if this would be any good -- but that $3xx price seems pretty attractive, as opposed to the $11xx that Quaife might want.
http://www.phantomgrip.com/product_lists.php?make=Acura
Test_Drive
#9
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Thread Starter
Originally posted by Test_Drive
Hey folks,
Phantom Grip was now updated their website to include the TSX for LSD upgrade kits.
Of course, I don't know if this would be any good -- but that $3xx price seems pretty attractive, as opposed to the $11xx that Quaife might want.
http://www.phantomgrip.com/product_lists.php?make=Acura
Test_Drive
Hey folks,
Phantom Grip was now updated their website to include the TSX for LSD upgrade kits.
![Smile](https://acurazine.com/forums/images/smilies/smile.gif)
Of course, I don't know if this would be any good -- but that $3xx price seems pretty attractive, as opposed to the $11xx that Quaife might want.
http://www.phantomgrip.com/product_lists.php?make=Acura
Test_Drive
Since VSA is just software , perhaps it can be reprogrammed to account for the LSD. Its more about traction control anyways. What I would ideally want is for the VSA to make yaw adjustments but to leave tire spin from accel alone completely, and let the LSD handle that.
#11
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Originally posted by sauceman
I think the VSA is pretty lenient in that it is not too interventionnist, so I would like to think it would be able to tolerate an LSD without too many difficulties.
I think the VSA is pretty lenient in that it is not too interventionnist, so I would like to think it would be able to tolerate an LSD without too many difficulties.
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#12
Originally posted by fdl
Maybe. But I dont want to be the first one to try
Maybe. But I dont want to be the first one to try
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Again, I'd assume that in most conditions the VSA would still work as before -- remember that LSDs typically don't give full lock, and that the brakes should be strong enough to take up any extra torque that the LSD might be sending to the wheel that VSA is applying brakes to.
Holy run-on sentence Batman.
Test_Drive
#15
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Originally posted by DEVO
Is VSA traction control and LSD is yaw control?
If true, aren't these system independent in what they do so they can coincide with each other nicely?
Is VSA traction control and LSD is yaw control?
If true, aren't these system independent in what they do so they can coincide with each other nicely?
No, VSA is computer controlled yaw AND traction control. But it works by using the brakes and taking away power from both wheels. LSD is really only traction control and will transfer power from a spinning wheel to a wheel with traction, thus allowing you to be stay at optimum power through turns, etc.
#17
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Thread Starter
Originally posted by DEVO
Ok. so i got them backwards but they still seem to operate independently from each other... right? I mean that's how I'm reading this.
Ok. so i got them backwards but they still seem to operate independently from each other... right? I mean that's how I'm reading this.
Its not a big issue, just something that needs to be considered when designing a car with both. Maybe an lsd will just drop right into the TSX with no problems, or maybe there will be huge problems..who knows
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#18
but unless you exceed a certain yaw point, VSA should not kick in... in which case you want the LSD to kick in. is this not happening?
so in your example the inside wheel is just spinning but no oversteer or underster is resulting (for example) so LSD should kick in.
let's say you are getting oversteer, the VSA system will want to apply brake pressure to the outside front wheel... to correct for the oversteer and will override LSD command to apply pressure to the inside wheel. From safety point of view, you want this... take care of oversteer first then worry about traction control.
understeer should work better because VSA will apply pressure to the rear while LSD will worry about the front. again... VSA will take precedent.
I hope this is how it's designed. or something to this effect. Comments?
so in your example the inside wheel is just spinning but no oversteer or underster is resulting (for example) so LSD should kick in.
let's say you are getting oversteer, the VSA system will want to apply brake pressure to the outside front wheel... to correct for the oversteer and will override LSD command to apply pressure to the inside wheel. From safety point of view, you want this... take care of oversteer first then worry about traction control.
understeer should work better because VSA will apply pressure to the rear while LSD will worry about the front. again... VSA will take precedent.
I hope this is how it's designed. or something to this effect. Comments?
#19
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Thread Starter
Originally posted by DEVO
but unless you exceed a certain yaw point, VSA should not kick in... in which case you want the LSD to kick in. is this not happening?
but unless you exceed a certain yaw point, VSA should not kick in... in which case you want the LSD to kick in. is this not happening?
#21
Don't think of the LSD as a system issuing commands. It's only a mechanical device in the differential that doesn't allow the two opposite wheels to spin at wildly different speeds. It doesn't apply brakes.
Edit: So in your above case, Devo, the LSD would stop the inside wheel from spinning (so that you can put power down) while the VSA would apply a brake to that outside front wheel (to get the car back in line).
Edit: So in your above case, Devo, the LSD would stop the inside wheel from spinning (so that you can put power down) while the VSA would apply a brake to that outside front wheel (to get the car back in line).
#22
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Thread Starter
Originally posted by DEVO
read again fdl... i added more.
read again fdl... i added more.
#23
oh i see.... yeah you are probably right... but i have a feeling that they designed this things as modules so that one can override the other... but i wouldn't want to be the first.
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#25
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Originally posted by STC
I have never had the VSA come on in my car yet. I corner fast and everything.
i'd take LSD over VSA. VSA is useless and for people who cant drive.
I have never had the VSA come on in my car yet. I corner fast and everything.
i'd take LSD over VSA. VSA is useless and for people who cant drive.
I'm surprised to hear this. In rain is extremely easy to get your VSA to come on. The shitty tires on the TSX can mean wheel spin right up to 3rd gear. And as for getting it to come on when your cornering ... this is possible too, just corner harder
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I think VSA is more of a saftey net for snow and rain conditions. FOr performance driving a LSD will be much more useful. I just wish we could have both.
#29
VSA is not meant to come on every time your drive. Maybe you haven't gotten into trouble yet. I suggest that you go to an empty parking lot and try accelarating in a circle... VSA should prevent you from spinning out.
#30
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Has anyone installed Quaife LSD? If so, have you had any problems with VSA?
Reason I'm asking is because my friend has installed one and his VSA light is always on (it's not working).
Thanks!
MBA
Reason I'm asking is because my friend has installed one and his VSA light is always on (it's not working).
Thanks!
MBA
#33
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Originally Posted by aaronng
Did he plug the VSS back in after reinstalling the tranny?
How would he go about testing to see whether it is working correctly?
Thanks!
MBA
#35
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Yes, he plugged in the speed sensor in and it's working properly (speedometer is fine).
But his VSA light is always on.
Any advice?
Thanks!
MBA
P.S. For those who don't know, LSD = Limited Slip Differential (do a search).
But his VSA light is always on.
Any advice?
Thanks!
MBA
P.S. For those who don't know, LSD = Limited Slip Differential (do a search).
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