I will be taking ownership of a new-to-me 2015 XKR 5.0 this weekend. I’ve asked my friend that is selling me the car, if it has the “dynamic” option. He didn’t know….. Which wouldn’t surprise me. He’s not much of a car guy. From what I’ve seen online, it appears there is a button with a checkered flag on it in the console, that enables Dynamic mode. If it has the button, does that mean it has that mode?

 

All 5.0L XKRs have the Dynamic mode button and feature.

 

'Dynamic mode' (the button with the checkered flag on) is different from the "Dynamic Pack" that was a factory option on later XKRs. This was a superset of the "Speed Pack" option and comprised engine management and transmission recalibration to allow a top speed of 174mph; larger rear spoiler, side sills and rear diffuser; suspension revisions similar to the XKR-S including stiffer knuckle, revised spring and damper settings etc.; 10mm lower ride height; gloss black 20in. Vortex alloys and black painted brake callipers.

 

and black painted brake callipers?

You sure!

 

Not sure at all @bydand , insofar as I have never examined an XKR with the Dynamic Pack in the 'flesh'. When I researched the model prior to buying my car I learned all I could about the variations and how to spot them and more than one source said the Dynamic Pack brake callipers were black. After reading your post I looked at Nigel Thorley's book - admittedly not authoritative - and he he notes "distinctive black painted callipers". My sincere apologies if I've misrepresented this, and also if my research isn't valid outside the UK market.

 

Its just I have never seen a Black callipered car in my hunt for one, Only red! Anyone seen a Black set up?

 

Thank you Justin. Will a driver hear/feel the difference in the car with Dynamic mode on?

 

oh boy yes…


To clarify @Kjeld "Dynamic Mode" - the button - is present on all models, with or without the "Dynamic Pack".

 

I purchased this 2014 XKR last December with both Dynamic and Black Pack. It has black calipers.

 

Does look nice, never seen one with black callipers. Hence the query.
Thanks.

 

Note that specs vary between North American and European market models. For example, the Pedestrian Protection System and Double Locking are standard equipment on European market models but are not available on North American models.

 

Mine are red, but so is the car

 

On my 2010 it seems like it just opens up exhaust flaps and is a little louder and may add more traction control, I hate traction control personally although without the button on I have notices that the traction control comes on when I try to get the car drifting.

 

On my XKR, dynamic mode makes the suspension feel harder, the transmission shift later and the throttle more sensitive. My driving tends to be in town or on on fairly twisty local country roads. In non-dynamic mode and transmission in S - my usual mode - the car is pretty lively. With dynamic mode on and S it becomes a right handful.

I'm not aware of dynamic mode having any to do with how the active exhaust operates. Mind you, I have the fuse pulled on mine anyway.

 

Interesting. So why remove the fuse. Does that keep the exhaust quieter or louder?

 

Normally, the outer pair of tailpipes - the louder ones - are open at start and idle and then close, opening again only under fairly hard acceleration/higher revs. in a recent thread another member posted a table showing what conditions the valves open under but I can't recall where that was just now.

Removing fuse F19 from the rear armrest fusebox disables the system, leaving the valves open all the time. This makes the car somewhat louder and growlier at low speeds. It's a free, reversible change that you can try out and then replace the fuse if you don't like it. It has no effect on performance.

As mentioned in a previous post, as far as I am aware dynamic mode has no effect on when the exhaust valves open and close as such.

 

Actually, with dynamic mode actuated, the exhaust cut outs are open. The normally non actuated mode, such as with the car off, the cut outs remain open. It’s not until the car is powered up that they close. That is why by removing F19, the cutouts stay open.

 

The exhaust valves remain open when the transmission is in manual i.e. sequential shift mode.

 

The exhaust valves on the 07 for certain and possibly through 09, are vacuum actuated by a pump in the left rear fender well up behind the liner. They "fail" open, in other words, are held closed by vacuum. You can remove fuse 19, or just unplug the vacuum hoses on top of the valves and plug the lines, cap the valve inlet. Since I was in there already for other reasons, I just removed the pump and taped up the electrical connections, cause weight reduction. At least 5mph faster.
2010 and up may use electrickery instead of vacuum, so the fuse would seem the only option.

 

Vacuum controlled on the R for all years.