This is from the official press release:

 

Dunno, man. I have PAE, but my box isn't the same as the R-S box either.
I'll look around, see if I can find those pictures I spoke of...
I didn't find the pictures I thought I saved, but I found the thread!

https://www.jaguarforums.com/forum/x...xhaust-192443/

 

What makes you think you have PAE and not a standard XKR back box?

 

What makes you think I DON'T???
P(erformance) A(ctive) E(exhaust), or PAE, uses an ACTIVE (see the "A" there?) system that is controlled electronically and actuated with a vacuum to open and close ACTIVE valves on the exhaust system.
Well, heck-almighty, that's what I have! Remarkable, isn't it?
Oh, and besides, it's also on the Build Sheet.

 

Here is my 2012 PAE and the build sheet with the option listed.

 

Because the PAE wasn't listed as a mainstream option until the 2012MY, when the XKR-S was introduced.

This is from the 2010 MY brochure and just mentions Quad Exhaust Tailpipes:




This is from the US ordering guide for the 2011 MY and shows just the standard (active) exhaust for the XKR:




This is from the 2012 MY XK Product Guide and is the first MY that PAE is mentioned in sales material:



And here it is in the 2012 MY US brochure:



As mentioned earlier, the XKR 75 pioneered the exhaust that became the PAE but this is how it was mentioned in the press release for the 75:




So what exactly does your build sheet say? Active Exhaust? The only active thing the build sheet for my 2010 XKR mentions is Active Headlamps.

 

Isn't the simple answer is to look under the car and if you have the X pipe and no resonators and the vacuum units on the back box then you have the PAE . Anything else is just the passive sport exhaust.

 

Are you satisfied with the x-pipe? Noise and engine?

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Originally Posted by jagtoes
Interesting as I have never seen the 530 number in any Jaguar information. where did you see this printed .

The metric equivalent of a single horsepower, referred to as 1 PS, equals 4,500 kilogram-metres per minute, which rounds to 32,550 foot-pounds per minute, or 0.9863 of a horsepower.
https://www.autoexpress.co.uk/car-ne...d-ps-explained

530 PS X 0.9863 = 523 HP

 

The standard XKR backbox has vacuum units too. The standard XKR backbox and PAE are not the same thing, the internals are different.

My '10 has an X pipe but I added it so that is not a good test

 

Yep, I know although the US Jaguar brochures do seem to quote HP = PS

 

The only visual clue would be the difference in the tail pipes the PAE has slightly larger tips

 

Never measured but here is mine.

 

Okay, so maybe I'm an idiot and only have the ACTIVE part, although I (now) have a resonator delete with X-pipe. "Standard" XKR box also. BUT BUT BUT, that post above says XKR boxes are all the same Part Number anyway, so that would make mine PAE regardless.

 

Still no

As I mentioned above, I only expanded the PAE options in the parts list to show that the XKR 75, XKR-S and cars with PAE all had the same part.

This is the more complete list and your car would have left the factory with C2P15668 which has been superseded to C2P24867.

 

This is my non-PAE one. I hadn't noticed before, probably because they are always dirty, but the outer pipes are a smaller diameter whereas yours seem to be a similar size.




Rough external diameter of outer pipes:





Rough external diameter of inner pipes:

 

Yep both of mine were the same OD

 

[QUOTE=kj07xk;1581767]Oh yeah! Not only gives the cat a nice pur under normal driving, you get a real braaap when you punch it, and the quad tips just look so much better than the dual tips (in my opinion).

And if you use the 'sport mode', those throttle blips on the downshift are much more pronounced.[/QUOTE.

Another option is to cut off the two valves on the XK muffler and then pull the valve stem out to the open position. You can then ether use a snap ring to hold them open or tack weld the stem to hold them open.

The sound is wonderful and the cost is $0.00. I have been running my 2007 XK for 103,000 miles with this setup. I am planning on removing the mid pipe resonator and replacing it with a “X-Pipe” or a “H-Pipe”.

Cheers,

Robbie

AtRo Racing Products

 

I realize this is an old thread has anyone else drilled out there pressure valve and how did you do it?

 

Related question - would XKR-S exhaust (the whole thing) fit into 2009 5.0 XK?

I guess it would be the same story as with XKR one - I'd need a tune and "always open"?

I would also need an XKR valence? Or is that different too?