Does anyone know the actual impact/improvement on EGTs before/after removal? I reallize we all have what we feel are rational opinions but really looking for some actual experience input. I am being circumspect about removing mine ~ and feel the need for some real/tangible benefits in doing so other than its a reasonable idea. Anyone have any definitive input like before/after figures?

TIA

Shummy ~

My 6.5 runs cooler and gained notisable bottom end torque, the turbo also spools up much quicker.
I left the shell of the cat in line, just nocked the guts out.

Faster spool up and 50-100 cooler EGTs. These are my REAL LIFE experiences as confirmed by not only removing the cat, but then re-installing it to tame my towing drone. I miss the noise and the ooomph of going catless.

150* drop with my '05...That was a before/after test at highway speeds (constant 70 MPH)...

X2 mine dropped about 150 to 200 deg after removing ming alot quicker spool up on all three bottom, mid range, and top end power.

I dont have gauges yet but i can tell you after going from a cat back to turbo back the turbo spooles up much quicker and it cleared up alot of my smoke.