Howdy All:
Posted earlier this week questions abo0ut Cat/DP. Matt5112 answered those for me. I have read exhaust posts till my eyes are bleeding. Now I am more confused than normal. Headers would be ideal, not going to happen, it's the Wife' car.

Given that,

Would I be better off just replacing Cat and Ubend

Using standard or high flow Cat

Going with the ZZ Performance 2.5 inch DP with Cat

Does the antifouler really work for the P0420 code with the high flow Cat

I don't want to lose the low end torque. Any performance boost or increase in MPG would be a plus. The car is used mostly for highway/long distance driving.

Thanks in advance.
Robert