@240sxdrft Right after the headers are the primaries. the secondary ones are further back. There's a huge resonator in the middle along the car. I removed that and replaced it with a y and straight pipes, adding an aftermarket eisenmann muffler. so the cats just after the headers are still there,...
FYI, turns out the "ported & polished intake" had a vacuum leak. Note to MB fans: Don't buy crap aftermarket parts. Check the forums first and don't be the guinea pig!
@240sxdrft Right after the headers are the primaries. the secondary ones are further back. There's a huge resonator in the middle along the car. I removed that and replaced it with a y and straight pipes, adding an aftermarket eisenmann muffler. so the cats just after the headers are still there,...