I removed fuse 14 & I like it! For those looking to improve handling...
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From: Florida
I removed fuse 14 & I like it! For those looking to improve handling...
I keep meaning to post this, but a few weeks ago I decided to remove fuse 14 and what an improvement it makes!
Ride is a LOT more firm and responsive. It also says a lot for how well CATS smooths out road imperfections and irregularities.
I can't see ever going back though.
Ride is a LOT more firm and responsive. It also says a lot for how well CATS smooths out road imperfections and irregularities.
I can't see ever going back though.
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The 2008 doesn't have Dynamic mode, which is why he has to pull Fuse 14 to get a (kinda) similar effect. The active dampers in the 4.2 only have 2 settings; the 5.0 has continuously variable ones, allowing much finer control.
Pulling a fuse forces a dampers to go in a "firm" setting. If you are driving on a bad road it may cause a phisical damage to suspension.
As for me - i'm planning to install a switchpack to control a suspension and exhaust fuses. Pretty easy to do it and i'll be able to change the behavior at any time.
As for me - i'm planning to install a switchpack to control a suspension and exhaust fuses. Pretty easy to do it and i'll be able to change the behavior at any time.
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From: London, UK
There's a thread about fitting this remote-controlled relay:
Corvette C6 Mild to Wild Exhaust On Demand Switch
Corvette C6 Mild to Wild Exhaust On Demand Switch
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From: Arlington, VA USA
Yup, this is a great way to improve the car. It makes it much less floaty and more responsive. However, I plugged mine back in because I was afraid of what the long term impacts would be on the struts.
I would love for somebody to come up with specific switches to make a "dynamic" mode for the 4.2s. That would be awesome.
I would love for somebody to come up with specific switches to make a "dynamic" mode for the 4.2s. That would be awesome.
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Joined: Oct 2013
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From: Scotland
I personally find the CATS on my 4.2 works well - when I'm just wafting about I like the floaty, magic-carpet ride quality. When I start pushing the car around a bit it seems to react quickly and firm up well.
I guess here in the UK the softer ride is quite welcome on our lousy road surfaces...
I guess here in the UK the softer ride is quite welcome on our lousy road surfaces...
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From: Florida
Unless there is something else I am missing.
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Dynamic Mode is not an on/off thing from a damping point of view - because the 5.0 dampers are continuously variable, all Dynamic mode does is 'slide' the damping to a different level. With CATS, it's either off (hard) or on (soft).
That being said, I don't think you're likely to damage your suspension turning CATS off.
That being said, I don't think you're likely to damage your suspension turning CATS off.
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From: Dallas, TX
Guys, speaking of this... I have a hard time noticing the difference in ride when I press race. Does it get smoother or more harsh to handle better? On my S600 the difference is like between a cloud and then becomes like my XKR - so its very noticeable.
What am I looking for when pressing it?
What am I looking for when pressing it?
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Errr, 'race' ??? 
If you mean Dynamic Mode (the chequered flag button), then there isn't an "instant" change. According to the workshop manual:
(my emphasis). While that's talking about the engine, I expect the same is true for the suspension - it 'eases' into the new configuration, so that the driver has time to adjust. And, as in normal operation, it's an adaptive, learning system - it won't change all of the working settings until you actually start to throw the car about. So, when you press the button, you may notice a small difference - but you'll notice a lot more when you start accelerating, braking & cornering hard.
If you mean Dynamic Mode (the chequered flag button), then there isn't an "instant" change. According to the workshop manual:
Each driving mode uses a combination of operating parameters for each sub-system. Changing between driving modes initiates a different set of operating characteristics, which will be noticeable to the driver. The driver will notice differences in engine response when, for example, the accelerator pedal is held in a constant position and the driving mode is changed from winter to dynamic, the driver will notice the torque and engine speed increase. Similarly, if the mode is changed from normal or dynamic to winter, the driver will notice a reduction in torque and engine speed.
NOTE: The change in torque and engine speed can take approximately 30 seconds and care must be taken not to confuse the JaguarDrive control system operation with an EMS fault.
NOTE: The change in torque and engine speed can take approximately 30 seconds and care must be taken not to confuse the JaguarDrive control system operation with an EMS fault.
Actually, if you are turned on a dynamic mode the suspension becomes stiffer. BUT it the control units registers too much bumps from a road it will soften a suspension.
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Joined: Mar 2011
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From: Frisco, Tx
Resurrecting this thread.
I have a 2011 xkr, so 5.0sc with ediff
Fuse 14 will disable both CATS and the ediff system which is unique to the 5.0s.
So I get an ediff fault.
I believe ediff fault will cause ediff motor not to separate lsd plates at low speeds, so I'm curious if I'll cause any extra tire scrub, or lsd plate wear. Or does it lock instead, so motor makes lsd engage?
Asked another way, does an ediff fault make the ediff act like a normal lsd, or an open diff?
Follow on question here, if I want to disable CATS, and keep ediff operational, what alternative do I have?
Can I remove a connector to one strut, and disable them all?
Thanks!
I have a 2011 xkr, so 5.0sc with ediff
Fuse 14 will disable both CATS and the ediff system which is unique to the 5.0s.
So I get an ediff fault.
I believe ediff fault will cause ediff motor not to separate lsd plates at low speeds, so I'm curious if I'll cause any extra tire scrub, or lsd plate wear. Or does it lock instead, so motor makes lsd engage?
Asked another way, does an ediff fault make the ediff act like a normal lsd, or an open diff?
Follow on question here, if I want to disable CATS, and keep ediff operational, what alternative do I have?
Can I remove a connector to one strut, and disable them all?
Thanks!
Last edited by andrezbim; Jul 25, 2017 at 05:03 PM.
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What benefit do you think you will get by pulling the fuse. The e-diff will default to an open rear and the suspension will default to a harsh ride. Seems counter intuitive to the advantage of the CATS system.
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From: Frisco, Tx
The goal is cats disable without e-diff disable. To accomplish this, much like the purpose of this thread, is additional ride stiffness and for me exhilaration.
I think "harsh" is a bit harsh, but as it turned out I like the ride this way better.
So I in fact replaced fuse 14, which I would now also NOT recommend for 5.0sc with e-diff, and just removed one of the cats connection to upper drivers shock. This disables cats without e-diff fault.
Cheers!
The goal is cats disable without e-diff disable. To accomplish this, much like the purpose of this thread, is additional ride stiffness and for me exhilaration.
I think "harsh" is a bit harsh, but as it turned out I like the ride this way better.
So I in fact replaced fuse 14, which I would now also NOT recommend for 5.0sc with e-diff, and just removed one of the cats connection to upper drivers shock. This disables cats without e-diff fault.
Cheers!
I think "harsh" is a bit harsh, but as it turned out I like the ride this way better.
So I in fact replaced fuse 14, which I would now also NOT recommend for 5.0sc with e-diff, and just removed one of the cats connection to upper drivers shock. This disables cats without e-diff fault.
Cheers!
do you only have to remove one connection to acheive this? I hit some standing water a while back and got an error about dynamic mode... after the initial panic and reading online its a very common thing with rare but harsh rain spells and standing water, anyway while in this mode apparently it puts the suspension onto its firmest setting and I loved it!... ideally I'd like to be able to engage this for sporty use but not loose the lsd like you mentioned and also not loose the option to maintain normal dynamic mode.. for anyone finding this in the future (worrying about the dynamic error) the error reset once the relevant sensor had dried out... its never occurred again
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From: Arlington, VA USA
I have also disconnected the fuse from time to time, but with our bumpy roads here I am not sure it is a good idea long term.
It definitely makes the car feel like it's on rails, though. More BMW-like (in a good way) and more hunkered down.
It definitely makes the car feel like it's on rails, though. More BMW-like (in a good way) and more hunkered down.
