I just bought a 4-1 header for my 95 Integra and while I am waiting for the UPS man to bring it to me I know I need to do something about the stock cat by replacing it with a high flow or a test pipe. Florida doesn't have emissions so it is legal for me to do it, :fawk: but what I am wondering is what kind of sound difference is the test pipe going to create over a high flow cat. I’m sure the gains wont be much more but every bit counts.
Thanks in advance