I was thinking about putting one on my civic hb. What do you think? Are they good for performance or do they have crappy flow?

 

NA or turbo?

 

A cutout will give you maximum flow. It's basically like having an open header/downpipe... wait, it is.

For an N/A car, you'll lose a lot of backpressure, and good bye torque that you don't have. I wouldn't do it.

For an FI car, your turbo will spool very quickly.

 

It is a zc with headers but, no turbo yet. :P I am planing on putting it after the cat and resinator before the first bent to bypass all the bends and muffaler. The exhaust is a 2 1/4 inch with high flow cat and aftermarket resenator with crush bends and a baffle type muffaler.

 

ill let you know in the next couple of weeks what happens... =) HAHAHH!