Some of you have put the Nameless Performance 200 Cell Catalytic Converters or down pipes as they call them on your car. Was there any Restricted Performance issues due to the O2 sensor readings? I think these are probably the best way to go in addition to removing some of the mufflers/resonators. I'm starting to think buying those along with a Magnaflow X-pipe and removing the resonators ahead of the wheels with a scratch built 2-1/2" system will be a whole lot cheaper. Please advise.

 

I have Larini's (200 cell sport catalysts) and have no issues for the last 20Kmiles or so. Even if it would give an error you probably can get away with it to buy these O2 extensors, at least on other (modern) cars these seem to work even if you remove the catalyst. Better to get an idea of what sort of sound you are looking for, as the sports catalyst already make the stock exhaust louder, but if you are looking for that you are on the right track ;-).

 

I have had no problems whatsoever with the Nameless catalysts. If you have not already, check out my installation write-up in post #36 of ths thread:

https://www.jaguarforums.com/forum/s...light=nameless

 

I did a scratch built system as well. I left the cats and the down pipes, but did a custom H, with new pipe all the way to the tips and Flowmasters behind the wheels where the last two mufflers were with no intermediate mufflers. You can check out my system here, if it helps you get a better idea of what you want to do. By all means post up when you get your system complete.