Looking for a diagram of the XJR/VDP SC exhaust system as well as the factory part numbers; and any recommendations for performance/standard replacement parts. Need to replace the center cat and looking for options
as I am having issues passing the emissions test.

Al Perez
2001 VDP SC
1984 Slll
1974 Sll
Irvine, Calif

 

Hi
Here parts diagrams from JEPC that shows the front exhaust. I only extracted the supercharged part numbers from the part number list.

The first one shows the rear section (intermediate exhaust silencer):



The next shows Front exhaust Pipe - the fixed coupling (not flexiable) system



This last one shows the front exhaust - the flexible coupling system:

 

You only have 2 cats. There are no center cats. Thats a muffler. Either delete it, put a x pipe in place or magnaflow dual in/out with x pipe inside. You can delete that muffler without increasing exhuast sound much

 

I take that back. youre in cali and might be differant. can you post a pic or confirm Jims pic. you never know what cali requires from a manufacturer to sell their cars there