E36 m3 UUC system U and midpipes PNW

[Van Westervelt]

Those are obd2, obd1 merges before the cats into a kind of x-pipe that is actually a restriction.

He already sold these too.

[golde30]

Tryn to get my swap bar'd... Hence the search for obd1 cats... It's a Cali thing.

[Robert]

Obd2