BEST 3rd Cat Delete (for USA customer)

[chstockd]

Has anyone done a third Cat delete on the I4? I dont see a lot of information on it and looking for some advice. Is a third cat delete worth it on the AMG engine? Does just a straight pipe make a difference? Do I need a valve controller? I want better sound but not sure I like the idea of having to open close the valves every time I get in the car.. (not really sure how it all works). Please excuse my ignorance on the subject and or if this has been answered somewhere else on the forum. If any one has an opinion, product suggestion, and or video of before/after for the AMG engine that would be great.

 

[Milk242]

Has anyone done a third Cat delete on the I4? I dont see a lot of information on it and looking for some advice. Is a third cat delete worth it on the AMG engine? Does just a straight pipe make a difference? Do I need a valve controller? I want better sound but not sure I like the idea of having to open close the valves every time I get in the car.. (not really sure how it all works). Please excuse my ignorance on the subject and or if this has been answered somewhere else on the forum. If any one has an opinion, product suggestion, and or video of before/after for the AMG engine that would be great.

No 3rd cat on the i4