Reviewed By chad m d (LEAD, SD) Reviewed for a 1990 Volvo 740 —5/7/2013 6:49 AM
2 major differences from stock: 1. the o2 sensor is now located on the cat - pre-filteration - instead of the "Y" pipe. 2. the cat is shorter than the stock cat, but my new "Y" pipe was longer than stock so there was 0 net difference. The Volvo (Jerry) is more torquie and has a smoother power curve. Jerry is far more happy now.