98 R34 GTT
Used to run full zorst system ( 3" dump/front pipe to standard gutted cat to 3"- 3.5" catback)
Am currently running 3" dump/front pipe to standard gutted cat to standard cat back, due to defects/epa etc want to stay legal. Got 86db first test then 90db second test 5 months later
i want to get rid of the gutted cat cause it stinks and i only just passed last emissions test. If i got a 3"catco high flow cat that should just bolt straight up no probs to the standard catback?
The car still has plenty of power and don't wanna restrict it further with a universal compliance cat.
Thanks in advance
ps. i used search many times with no results