Which do you prefer? Do you notice much difference in the ride quality between settings? Does the performance setting help keep the car flat in hard turns? I have changed mine back and forth when driving and don't notice much difference, but maybe I am just not pushing it enough to notice a difference.

Put it in Performance and nail a curve. You'll like it.

I would agree, with normal drive there is not much difference. Go into a hard turn, and you will surely see a difference in performance.
I wish the touring option would make as smooth as a fleetwood. Since I notice nothing improved in touring, I keep mine in performance.

Always in Touring. Don't notice a difference between the 2 settings. I read a review on the STS when it first came out that stated the car does such a good job in the touring setting (even when pushed hard) that they question the necessity of having the 2 settings. I would agree.

Now if the touring setting would make the car ride like a Fleetwood and the performance setting made it handle like it it does now...That would be very cool.

I leave it in touring. The roads in Alaska are a paved collection of frost heaves and tarred over cracks. The performance position is too harsh. It's fun for a little while but gets old quickly. The performance position is very similar to the lux-sport suspension in a CTS. The big difference I find is that on roads and speeds that would have you bouncing off the headliner in a CTS, the STS is a pleasure.

It's nice that the Touring/Performance switch can now be done on the fly. With my old '05 you had to be at a full stop and save the change in memory.
I have a question along the same line.
If you push the Traction Control button, you get T/C OFF.
If you push the TC button for about 5 seconds, you get Stabilty System OFF.
Just what are you turning off with just a brief push? Is it only throttle/brake nannies to prevent wheelspin or more?
I assume that by holding the button down long enough to get the Stability System OFF message all of the nannies are given the day off, or am I wrong? Is there still some residual T/C or Stabilty System still active?

I leave it in Touring until I encounter a twisty bit of road with little or no traffic. The differences are subtle, but they are there. A friend tends to car sickness on twisty roads in Touring mode and quiets right down in Performance mode. I notice less dive and squat, less roll in Performance mode. The car takes a set quicker entering a corner and flattens out quicker after exiting. In short, the car is more confidence-inspiring when driven enthusiastically in Performance mode.

Regarding disabling TC and Stabilitrak: I've driven my car on a race track both ways. It's much more fun with the electronic assists turned off (knowing that on a properly engineered road course there's nothing to hit if you lose it). And when you've disengaged TC and Stabilitrak you are on your own, just like in the good-old days.:thumbsup: I leave the assists on when driving on public roads.

Just joined today. Have any of you repaired your MRC? I want to get, or make up, a kit to convert my new STS V6 to MRC. Can any one point me in the right direction?

stan, you're taking on a task that's not worth the time & effort. You should've just bought a car with MRC. You'd never realistically be able to transplant the sensors, wiring, & hardware to equip your car with MRC. On a good note, it's not likely you'll ever miss it. In fact alot of people on here prefer the ride without MRC>

You'd need the four MRC shocks, a suspension control module (mounts to the right rear fender well inside the trunk), four suspension position sensors (these may already be there, since they may play a part in Stabilitrak), a lot of wiring (this may already be in the wiring harnesses, unused, since it may be cheaper for GM to include some unused wiring in the standard cables than it is to produce special cabling for MRC-equipped cars), a Navigation unit programmed for MRC functionality, and either a shop manual or a subscription to Alldata. (Everyone sing now: "...and a partridge in a pear tree"). You'll also need a LOT of money to pay for a really knowledgeable technician to install all this stuff, or if you want to try the install yourself, a LOT of time and a LOT of specialized tools and test equipment. We're dying to know how this turns out.

Oh, and welcome to the boards. (No kidding.)

Yea...the only thing that may be harder to do would to be convert my STS from RWD to AWD :)

Yea...the only thing that may be harder to do would to be convert my STS from RWD to AWD :)
Now that would be a ball buster. Since the floor mats are different the floor and underbody would have to be modified.

Is it possible to change my '05 STS MRC so I can switch between performance and touring on the move? That would be beneficial. I wish the cadillac had a knob or switch for it like the corvette.

Is it possible to change my '05 STS MRC so I can switch between performance and touring on the move? That would be beneficial. I wish the cadillac had a knob or switch for it like the corvette.
YES! Cadillac has a programming update for the Nav unit (note: this is NOT an updated map disk) that, among many other things, puts the MRC Touring/Performance choice on the first CONFIG screen. These MRC "soft keys" are accessible while the car is on motion. I believe that the fix for TSB 05-08-126-001B does this. Ask your service advisor.

In my early '06 STS (built in September '05) MRC control was accessible only when the car was stopped. My Nav unit was replaced to correct an unrelated problem. When I got my car back, I was delighted to see the MRC soft keys appear on the first screen that appears after pressing the CONFIG hard key.

Ok, so what is the diff between pressing the button on the screen, or just pushing the shifter over to the manual drive. You get sD on the display. If you never actually shift, just push the shifter over, u r still in automatic.

The button on the screen adjusts the way the car rides/handles. Performance or Touring mode.

Moving the shifter over to get the sD on the display adjusts the way the transmission shifts. If you don't manually shift from this position, it stays in auto. I believe the "s" stands for "sport" mode or something like that...

Yes the "S" stands for sport and switches the shift program over to PAL (Performance Algorithm Liftfoot). The main feature being that the car will hold gear when you take your foot off of the accelerator (hill climbing, cornering etc.)

Moving the shifter over to get the sD on the display adjusts the way the transmission shifts. If you don't manually shift from this position, it stays in auto. I believe the "s" stands for "sport" mode or something like that...

That's cool! I am always learning something on this forum. I thought that once moved to the right, I was in manual mode. I didn't know about the sport/auto mode. Thanks. Time to go for a ride in the mountains.

Ok so in that case I've never driven sport mode, I think pushing the nob over should be all u have to do. Too much to go through the menu, but Im going to check it out

I use the sport mode when approaching winding turns that get progressively sharper such that I can not free my hands to down shift. After a few turns, the car will sense that you need to maintain a lower gear for slowing before a turn, throttle steering, and accelerating out of turns. As the turns get less intense, I then do manual shifts or reset the controller by quickly flipping the shifter to D and then back to sD. You need to reset the controller after coming out of a sequence of turns because the algorithm gets wound up and would take a few seconds to reset on it's own. In other words the RPMs stay high when you don't need it any more so you just reset the controller.

When I'm in the mountains, I leave it in sD so it's just there when I need it. If the alternating turns are predictable and constant curvature, I just do manual shifts and then reset, but when the turns are coming fast and changing curvature, I let the sD take care of it. It's so much fun sometimes I want to turn back around and do it again, ha ha.

If traction control and the stability system works like it does on a Corvette, which I think it does, hitting the traction control button once turns off traction control and the stability system. Holding it down for 5 seconds turns off the traction control only and not the stabilty system. When I race my Corvette at an auto cross or rent track time, you don't want the traction control on. If you're acellerating hard and the tires start to break then the engine is throttled back which is not desired. You want to be able to fully balance your acceleration yourself. Don't believe that there is any advantage to turning off the stability system. In my circle of fellow Corvette racers we all use the stabilty system, but we're not high skilled race drivers, just want to bes.

Performance of course.