So, I don't know if there is interest but I spoke to the guys over at NP and asked if they would be willing to make some hi flow CATS for our model. They already do parts for the XK's and XJ's and they were open to expanding to the XF. I know we already have options for hi flow CATS but the price is more than I'm willing to pay, the avg is $2000 Spires or Paramont. They said if they could get a car or CATS from our car to there shop they would build if 5-10 were interested in this mod. The price would be $995. Anyone in Washigton willing to drop by there shop? Here are some pics of there work, it's top notch. I'm sure the XK guys can vouch.

 

From what I have heard there are only 2 major makers of high flow 200 cell aftermarket cats out there. Vibrant is 1 I think and another I forgot as I type this. I do not see anyone of them making more or less of HP to even complain about so I would go for the no name units as long as the fitment is right and warranty. A 200 cell spiral cat is just that. If it were me I would skip the Cat and so a test pipe instead. I personally think if I am going to spend that money I want the max power it has to offer ,so catless would be my only way to go. But that is just how I feel and it isn't for everyone so I do not bash anyone for high flow cats. I am just a HP addict looking for my fix.

 

Nameless makes a very high quality product...and they are not no name cats, Nameless is the name.

 

+1 on the statements by Steve ( WhiteXKR )

 

Nameless is the name of the speed shop. And yes they are 200 cell but they also do a offroad straight pipe as well. Spires and Paramont do the same. But $2000 is way to much. So I reached out to these guys and if there was interest they would be willing to produce for $995.

 

I asked them a while back as well. I don't think there was enough interest here at that time. I'd go for a off road version (no cat) as long as the price was ok. I have the 4.2L SC though so I'm sure there are some differences.

 

I have the 4.2 S/C as well. I hope we can get some interest. But it doesn't look promising.

 

I've been chasing this for about a year but being on the right side of the country I'm unable to be the goat, er, test subject. It was suggested that if they were sent a set of used downpipes from an XFR they could put a set together for us. Problem I have is I don't entirely trust a recycler (junk yard) in providing me with the correct set vs. generic XF pipes. But, yes, I'm in for a set.
Milltek Sport is the other manuf. that has custom cats. My communication with them only required info on the dimensions of the cat and they had 200 and 300 cell as well.