Hi all.

The exhaust system on my daughter's 91 240 fell apart, so I picked up a new cat and exhaust system.

The three bolts holding the header flange to the cat flange were solid rust. While banging around, the cat, cat flange, AND header flange came off as one piece. The header pipe where the flange was mounted is clean (it even has a rib on it that presumably held the flange.)

Question: is there any such thing as a clamp-on replacement flange for the header pipe, or am I looking at replacing the header pipe, too?

Also, the 02 sensor would not come out of the cat, so I had to cut the wires. If I run w/o a sensor (my cat came with the plug), will I impact performance? This card does not need to pass emissions in MA...

Thanks!