Today I replaced the whole exhaust system and deleted the 3 cats which are very restrictive. First off is an early 156 cf2 exhaust manifold.



I drilled 2 holes for the lambda sensors and removed the heat shield brackets.



Gave it a blast up to get rid of the crud.



This is the original cf3 manifold and pre-carts.





Pre-cats removed. They had seen better days.



New manifold and 156 down pipe.



I heat wrapped the whole system to back box.





Theres noticeably more torque at the bottom of the rev range and is more willing to rev.