You know I hadnt given much thought to the main pipe but your right it would be nice to go with a 3" main to 2 1/2" split. Or would it be better for bottom end with the stock size?
Ya, that'* what I was thinking. To stay with the stock exhaust for the low end torque. Can always change it out later and gauge the difference.
I know that I didn't lose any torque in my Jeep when I removed the CAT and installed the Borla, but I kept the stock 2 1/4" pipe size.....just went all stainless with a cool Borla 4" tip.
That sucker really moves....for an SUV. On wet roads it will lose traction in straightline acceleration, even in 4WD.
I dropped the rest of the exhaust down onto blocks under the car. Very easy to do, even by myself alone.
Cleaned up the exhaust tips and touched up the black paint. Those tips would be wasted if you had to replace the pipes....I like them and they are a trademark for this car even if they are too small.
Now I will cut off the CAT and it will be much easier to install the headers.
I plan to cut the 2 1/2" pipe in front of the Resonator then connect the 3" header downpipe to it.
I should be fun driving to the muffler shop with open headers.